Umbraco Lucene Index Device not ready - asp.net-mvc

So I am getting an exception on an Umbraco 7 instance on windows shared hosting. It seems like after an arbitrary amount of time an issue crops up with the Lucene Index (whose API I do not call directly) and the application goes into a state of error until I refresh the app pool. Any help would be greatly appreciated.
2015-08-04 05:57:08,413 [7] ERROR Umbraco.Core.UmbracoApplicationBase
- [Thread 342] An unhandled exception occurred
System.IO.IOException: The device is not ready.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.ReadCore(Byte[] buffer, Int32 offset, Int32 count)
at System.IO.FileStream.Read(Byte[] array, Int32 offset, Int32 count)
at System.IO.BinaryReader.Read(Byte[] buffer, Int32 index, Int32 count)
at Lucene.Net.Store.SimpleFSDirectory.SimpleFSIndexInput.ReadInternal(Byte[] b, Int32 offset, Int32 len)
at Lucene.Net.Store.BufferedIndexInput.Refill()
at Lucene.Net.Store.BufferedIndexInput.ReadByte()
at Lucene.Net.Store.IndexInput.ReadVInt()
at Lucene.Net.Index.TermBuffer.Read(IndexInput input, FieldInfos fieldInfos)
at Lucene.Net.Index.SegmentTermEnum.Next()
at Lucene.Net.Index.SegmentTermEnum.ScanTo(Term term)
at Lucene.Net.Index.TermInfosReader.Get(Term term, Boolean useCache)
at Lucene.Net.Index.TermInfosReader.Terms(Term term)
at Lucene.Net.Index.SegmentReader.Terms(Term t)
at Lucene.Net.Index.DirectoryReader.MultiTermEnum..ctor(IndexReader topReader, IndexReader[] readers, Int32[] starts, Term t)
at Lucene.Net.Index.DirectoryReader.Terms(Term term)
at Lucene.Net.Search.WildcardTermEnum..ctor(IndexReader reader, Term term)
at Lucene.Net.Search.WildcardQuery.GetEnum(IndexReader reader)
at Lucene.Net.Search.MultiTermQuery.ConstantScoreAutoRewrite.Rewrite(IndexReader reader, MultiTermQuery query)
at Lucene.Net.Search.WildcardQuery.Rewrite(IndexReader reader)
at Lucene.Net.Search.BooleanQuery.Rewrite(IndexReader reader)
at Lucene.Net.Search.BooleanQuery.Rewrite(IndexReader reader)
at Lucene.Net.Search.IndexSearcher.Rewrite(Query original)
at Lucene.Net.Search.Query.Weight(Searcher searcher)
at Lucene.Net.Search.Searcher.CreateWeight(Query query)
at Lucene.Net.Search.Searcher.Search(Query query, Filter filter, Int32 n, Sort sort)
at Examine.LuceneEngine.SearchResults.DoSearch(Query query, IEnumerable`1 sortField, Int32 maxResults)
at Examine.LuceneEngine.Providers.BaseLuceneSearcher.Search(ISearchCriteria searchParams, Int32 maxResults)
at Examine.LuceneEngine.Providers.BaseLuceneSearcher.Search(ISearchCriteria searchParams)
at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.GetUmbracoMedia(Int32 id)
at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.GetById(UmbracoContext umbracoContext, Boolean preview, Int32 nodeId)
at Umbraco.Web.PublishedCache.ContextualPublishedCache`1.GetById(Boolean preview, Int32 contentId)
at Umbraco.Web.UmbracoHelper.TypedMedia(Object id)
at ASP._Page_Views_HomePageCarouselItem_cshtml.Execute() in g:\pleskvhosts\crossfitbyob.com\httpdocs\Views\HomePageCarouselItem.cshtml:line 7
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
at System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection)
at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model)
at ASP._Page_Views_HomePageCarouselFolder_cshtml.Execute() in g:\pleskvhosts\crossfitbyob.com\httpdocs\Views\HomePageCarouselFolder.cshtml:line 8
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
at System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection)
at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model)
at ASP._Page_Views_HomePage_cshtml.Execute() in g:\pleskvhosts\crossfitbyob.com\httpdocs\Views\HomePage.cshtml:line 9
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
at System.Web.WebPages.StartPage.RunPage()
at System.Web.WebPages.StartPage.ExecutePageHierarchy()
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
at System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass1a.<InvokeActionResultWithFilters>b__17()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass1a.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass1a.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass25.<>c__DisplayClass2a.<BeginInvokeAction>b__20()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult)
at System.Web.Mvc.Controller.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End()
at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End()
at System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult)
at System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult)
at System.Web.Mvc.MvcHandler.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End()
at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult)
at System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Azure websites uses a remote file system which can cause some havoc with Lucene and we've seen this error quite a few times. I can only assume then that Godaddy also use a remote file server for their IIS websites.
Basically the solution is to run your Umbraco lucene indexes on local temp asp.net storage. In the latest versions of Umbraco (7.2.8+) this functionality is built into the core and you would use the LocalOnly configuration flag for both your indexers and searchers, for example:
<add name="InternalIndexer" type="UmbracoExamine.UmbracoContentIndexer, UmbracoExamine"
supportUnpublished="true"
supportProtected="true"
analyzer="Lucene.Net.Analysis.WhitespaceAnalyzer, Lucene.Net"
useTempStorage="LocalOnly"/>
<add name="InternalSearcher" type="UmbracoExamine.UmbracoExamineSearcher, UmbracoExamine"
analyzer="Lucene.Net.Analysis.WhitespaceAnalyzer, Lucene.Net"
useTempStorage="LocalOnly"/>
If you are using old versions of Umbraco you can use a custom library called TempStorage: https://github.com/Shazwazza/UmbracoExamine.TempStorage
This issue has been logged here: http://issues.umbraco.org/issue/U4-3222 but most of the discussion and solution is here: https://our.umbraco.org/forum/getting-started/installing-umbraco/20999-Disable-Lucene-Examine#comment-228320

Related

NullReferenceException in SiteLayout.cshtml with FileResult

For a client of ours we have an MVC action which returns PDF files. The following code is the logic to return the FileResult.
public FileResult DownloadAbsFile(string id)
{
String path = GetPathNameByID(id);
if (System.IO.File.Exists(path))
{
byte[] fileBytes = System.IO.File.ReadAllBytes(path);
string fileName = System.IO.Path.GetFileName(path);
return File(fileBytes, System.Net.Mime.MediaTypeNames.Application.Pdf, fileName);
}
else
{
return null;
}
}
When I request a PDF file using the right URL most of the time there is no problem. However certain users get an error. The error is puzzling me for quite some time. The error I get is as follows.
Exception type: NullReferenceException
Exception message: Object reference not set to an instance of an object
at ASP._Page_Views_Shared_SiteLayout_cshtml.Execute() in
xxx\Views\Shared\SiteLayout.cshtml:line xxx
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext
pageContext, TextWriter writer, WebPageRenderingBase startPage)
at System.Web.WebPages.WebPageBase.<>c__DisplayClass3.
<RenderPageCore>b__2(TextWriter writer)
at System.Web.WebPages.HelperResult.WriteTo(TextWriter writer)
at System.Web.WebPages.WebPageBase.Write(HelperResult result)
at System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName,
Action`1 body)
at System.Web.WebPages.WebPageBase.PopContext()
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext
pageContext, TextWriter writer, WebPageRenderingBase startPage)
at System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter
writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext,
TextWriter writer)
at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
at
System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext
controllerContext, ActionResult actionResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.
<BeginInvokeAction>b__1e(IAsyncResult asyncResult)
at
On the specific line in the cshtml it tries to access the PageTitle in the ViewBag, which wasn't set. This value is never set, so I get this. But what I do not get is why it is trying to render the view in the first place.
Can anybody help me with this?

Umbraco No parameterless constructor defined for this object

I am trying to render a partial view in Umbraco. I have a BaseLayout.cshtml,Homepage.cshtml,BaseLayoutViewModel,HomepageViewModel
This is my BaseLayout View
#inherits Umbraco.Web.Mvc.UmbracoViewPage<View_Models.BaseLayoutViewModel>
#{
Layout = null;
}
<!DOCTYPE html>
<html lang="en-gb">
<head>
</head>
<body>
#Html.Action("GetPrimaryNavbar", "PrimaryNavbar", Model) //This is there the site throws an error.
#RenderBody()
</body>
</html>
This is my BaseLayout Model. Homepage model inherits from base layout.
public class BaseLayoutViewModel : PublishedContentModel
{
public BaseLayoutViewModel(IPublishedContent content) : base(content)
{
}
public string PageTitle => this.GetPropertyValue<string>(FieldNames.BaseLayout.PageTitle);
public string PageDescription => this.GetPropertyValue<string>(FieldNames.BaseLayout.PageDescription);
public string NavigationName => this.GetPropertyValue<string>(FieldNames.BaseLayout.NavigationName);
}
My PrimaryNavbar Partial view is:
#inherits Umbraco.Web.Mvc.UmbracoViewPage<View_Models.PrimaryNavbarViewModel>
<header>
<ul>
<li>
</li
</ul>
</header>
And the controller for the PrimaryNavbar is:
public class PrimaryNavbarController : SurfaceController
{
[ChildActionOnly]
public ActionResult GetPrimaryNavbar(RenderModel model)
{
//var primaryNavbarViewModel = new PrimaryNavbarViewModel(model.Content);
return PartialView("PrimaryNavbar");//, primaryNavbarViewModel);
}
}
EDIT: Adding Full Error
Server Error in '/' Application.
No parameterless constructor defined for this object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.MissingMethodException: No parameterless constructor defined for this object.
Source Error:
Line 28: <body>
Line 29:
Line 30: #Html.Action("GetPrimaryNavbar", "PrimaryNavbar", Model)
Line 31:
Line 32: #RenderBody()
Stack Trace:
[MissingMethodException: No parameterless constructor defined for this object.]
System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +138
System.Activator.CreateInstance(Type type, Boolean nonPublic) +105
System.Activator.CreateInstance(Type type) +12
System.Web.Mvc.DefaultModelBinder.CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) +272
[MissingMethodException: No parameterless constructor defined for this object. Object type 'Umbraco.Web.Models.RenderModel'.]
System.Web.Mvc.DefaultModelBinder.CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) +346
System.Web.Mvc.DefaultModelBinder.BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +744
Umbraco.Web.Mvc.RenderModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +122
System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor) +460
System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor) +137
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__19(AsyncCallback asyncCallback, Object asyncState) +1167
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state) +455
System.Web.Mvc.Controller.<BeginExecuteCore>b__1c(AsyncCallback asyncCallback, Object asyncState, ExecuteCoreState innerState) +42
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) +65
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.Controller.BeginExecuteCore(AsyncCallback callback, Object state) +881
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) +699
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__4(AsyncCallback asyncCallback, Object asyncState, ProcessRequestState innerState) +94
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) +65
System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +539
System.Web.Mvc.ServerExecuteHttpHandlerWrapper.Wrap(Func`1 func) +27
System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) +3614
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage) +131
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) +36
System.Web.Mvc.Html.ChildActionExtensions.ActionHelper(HtmlHelper htmlHelper, String actionName, String controllerName, RouteValueDictionary routeValues, TextWriter textWriter) +595
System.Web.Mvc.Html.ChildActionExtensions.Action(HtmlHelper htmlHelper, String actionName, String controllerName, RouteValueDictionary routeValues) +114
ASP._Page_Views_BaseLayout_cshtml.Execute() in c:\Users\USERNAME\documents\visual studio 2015\projectsViews\BaseLayout.cshtml:30
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +253
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +148
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +122
System.Web.WebPages.<>c__DisplayClass3.<RenderPageCore>b__2(TextWriter writer) +311
System.Web.WebPages.WebPageBase.Write(HelperResult result) +108
System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body) +89
System.Web.WebPages.WebPageBase.PopContext() +310
Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) +232
System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +375
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +90
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +833
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +833
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +833
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +81
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +186
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +29
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +65
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +53
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +36
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +44
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +65
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +399
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +137
I cant understand why I am getting "No parameterless constructor defined for this object." Can someone help me on this?
Thanks
To solve the issue you need to send the model like this:
#Html.Action("GetPrimaryNavbar", "PrimaryNavbar", new { model = Model })

Glass.Mapper.MapperException: Failed to create type - No parameterless constructor defined for this object

Following an earlier post, I'm implementing this YouTube Video Picker in Sitecore - this has involved creating a custom Field Type (YouTubeVideoField). the control itself works no problem but when trying to get the video on the page (#Html.Sitecore().Field("YouTube Video")) I get the following error. Any ideas?
5824 15:50:34 ERROR Unhandled exception occurred
Exception: System.Web.HttpUnhandledException
Message: An unhandled exception occurred.
Source: Sitecore.Mvc
at Sitecore.Mvc.Pipelines.MvcEvents.Exception.ShowAspNetErrorMessage.ShowErrorMessage(ExceptionContext exceptionContext, ExceptionArgs args)
at Sitecore.Mvc.Pipelines.MvcEvents.Exception.ShowAspNetErrorMessage.Process(ExceptionArgs args)
at (Object , Object[] )
at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs](String pipelineName, TArgs args)
at Sitecore.Mvc.Filters.PipelineBasedRequestFilter.OnException(ExceptionContext exceptionContext)
at System.Web.Mvc.ControllerActionInvoker.InvokeExceptionFilters(ControllerContext controllerContext, IList`1 filters, Exception exception)
at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
at Sitecore.Mvc.Controllers.SitecoreActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
at System.Web.Mvc.Controller.<>c__DisplayClass22.<BeginExecuteCore>b__1e()
at System.Web.Mvc.Async.AsyncResultWrapper.<.cctor>b__0(IAsyncResult asyncResult, Action action)
at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
at Sitecore.Mvc.Routing.RouteHttpHandler.EndProcessRequest(IAsyncResult result)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
Nested Exception
Exception: System.InvalidOperationException
Message: Error while rendering view: '/Views/Layouts/_Default.cshtml' (model: 'Sitecore.Mvc.Presentation.RenderingModel, Sitecore.Mvc').
Source: Sitecore.Mvc
at Sitecore.Mvc.Presentation.ViewRenderer.Render(TextWriter writer)
at Sitecore.Mvc.Pipelines.Response.RenderRendering.ExecuteRenderer.Render(Renderer renderer, TextWriter writer, RenderRenderingArgs args)
at Sitecore.Mvc.Pipelines.Response.RenderRendering.ExecuteRenderer.Process(RenderRenderingArgs args)
at (Object , Object[] )
at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs](String pipelineName, TArgs args)
at Sitecore.Mvc.Presentation.RenderingView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
Nested Exception
Exception: System.InvalidOperationException
Message: Error while rendering view: '/Views/Component/YouTubeVideo.cshtml'.
Source: Sitecore.Mvc
at Sitecore.Mvc.Presentation.ViewRenderer.Render(TextWriter writer)
at Sitecore.Mvc.Pipelines.Response.RenderRendering.ExecuteRenderer.Render(Renderer renderer, TextWriter writer, RenderRenderingArgs args)
at Sitecore.Mvc.Pipelines.Response.RenderRendering.ExecuteRenderer.Process(RenderRenderingArgs args)
at (Object , Object[] )
at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs](String pipelineName, TArgs args)
at Sitecore.Mvc.Pipelines.Response.RenderPlaceholder.PerformRendering.Render(String placeholderName, TextWriter writer, RenderPlaceholderArgs args)
at (Object , Object[] )
at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs](String pipelineName, TArgs args)
at Sitecore.Mvc.Helpers.SitecoreHelper.Placeholder(String placeholderName)
at ASP._Page_Views_Layouts__Default_cshtml.Execute() in c:\inetpub\wwwroot\Website\Views\Layouts\_Default.cshtml:line 27
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
at Sitecore.Mvc.Presentation.ViewRenderer.Render(TextWriter writer)
Nested Exception
Exception: Glass.Mapper.MapperException
Message: Failed to create type BrainJocks.YouTube.Custom.FieldTypes.YouTubeVideoField
Source: Glass.Mapper
at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateConcrete.CreateConcreteTask.CreateObject(ObjectConstructionArgs args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\ObjectConstruction\Tasks\CreateConcrete\CreateConcreteTask.cs:line 117
at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateConcrete.CreateConcreteTask.Execute(ObjectConstructionArgs args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\ObjectConstruction\Tasks\CreateConcrete\CreateConcreteTask.cs:line 68
at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 77
at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 82
at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 82
at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 82
at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 82
at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 82
at Glass.Mapper.AbstractService.InstantiateObject(AbstractTypeCreationContext abstractTypeCreationContext) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\AbstractService.cs:line 138
at Glass.Mapper.Sc.SitecoreService.CreateType(Type type, Item item, Boolean isLazy, Boolean inferType, Dictionary`2 parameters, Object[] constructorParameters) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper.Sc\SitecoreService.cs:line 495
at Glass.Mapper.Sc.Pipelines.Response.GetModel.GetObject(String model, Database db, Rendering renderingItem) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper.Sc.Mvc\Pipelines\Response\GetModel.cs:line 240
at Glass.Mapper.Sc.Pipelines.Response.GetModel.GetObject(String model, Database db, Rendering renderingItem) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper.Sc.Mvc\Pipelines\Response\GetModel.cs:line 188
at Glass.Mapper.Sc.Pipelines.Response.GetModel.Process(GetModelArgs args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper.Sc.Mvc\Pipelines\Response\GetModel.cs:line 92
at (Object , Object[] )
at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs](String pipelineName, TArgs args)
at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs,TResult](String pipelineName, TArgs args, Func`2 resultGetter)
at Sitecore.Mvc.Presentation.Rendering.GetModel()
at Sitecore.Mvc.Presentation.Rendering.get_Model()
at Sitecore.Mvc.Presentation.ViewRenderer.get_Model()
at Sitecore.Mvc.Presentation.ViewRenderer.Render(TextWriter writer)
Nested Exception
Exception: System.MissingMethodException
Message: No parameterless constructor defined for this object.
Source: mscorlib
at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(Type type, Boolean nonPublic)
at System.Activator.CreateInstance(Type type)
at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateConcrete.CreateConcreteTask.CreateObject(ObjectConstructionArgs args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\ObjectConstruction\Tasks\CreateConcrete\CreateConcreteTask.cs:line 100
Any ideas?
Thanks!
Dan
EDIT: So I'm reading through the Glass Mapper tutorials - do i need to create a custom data handler?
You probably need to implement a custom data handler. If you want to use the supplied custom field see these examples:
https://github.com/mikeedwards83/Glass.Mapper/blob/master/Source/Glass.Mapper.Sc/DataMappers/SitecoreFieldScWrapperMappers.cs

Azure & My MVC 5 Web.Config

Everytime I do a commit and deploy(Publish) to Azure using MVC 4 or 5 in Visual Studio 2012 to my Azure Website which uses Azure SQL for my datasource (not sure what info is pertinent here). I get an Error when Visual Studio pulls up my website in the browser to test it.
Now the error below is what I get until I manually go back into Visual Studio and upload the Root Web.Config file. Which should have just been uploaded anyways. But once I upload that again by itself the errors go away.
Here is the error:
Error:
Format of the initialization string does not conform to specification starting at index 0.
Source Error:
Line 12: </div>
Line 13: </div>
Line 14: #Html.Action("Appraisers", "Partials")
Line 15: </div>
Line 16: <!-- End div class="row" -->
I can't post the entire stack trace here, I'm having problems doing so, but here are the first few lines from each error in the trace:
[ArgumentException: Format of the initialization string does not conform to specification starting at index 0.]
System.Data.Common.DbConnectionOptions.GetKeyValuePair(String connectionString, Int32 currentPosition, StringBuilder buffer, Boolean useOdbcRules, String& keyname, String& keyvalue) +5314705
System.Data.Common.DbConnectionOptions.ParseInternal(Hashtable parsetable, String connectionString, Boolean buildChain, Hashtable synonyms, Boolean firstKey) +124
System.Data.Common.DbConnectionOptions..ctor(String connectionString, Hashtable synonyms, Boolean useOdbcRules) +95
System.Data.SqlClient.SqlConnectionString..ctor(String connectionString) +59
System.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions(String connectionString, DbConnectionOptions previous) +24
System.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup(DbConnectionPoolKey key, DbConnectionPoolGroupOptions poolOptions, DbConnectionOptions& userConnectionOptions) +167
System.Data.SqlClient.SqlConnection.ConnectionString_Set(DbConnectionPoolKey key) +61
System.Data.SqlClient.SqlConnection.set_ConnectionString(String value) +66
System.Data.Entity.Internal.LazyInternalConnection.InitializeFromConnectionStringSetting(ConnectionStringSettings appConfigConnection) +122
System.Data.Entity.Internal.LazyInternalConnection.Initialize() +62
System.Data.Entity.Internal.LazyInternalConnection.get_Connection() +12
System.Data.Entity.Internal.LazyInternalContext.get_Connection() +89
System.Data.Entity.Infrastructure.DbContextInfo..ctor(Type contextType, DbProviderInfo modelProviderInfo, AppConfig config, DbConnectionInfo connectionInfo) +171
System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration, DbContext usersContext) +240
System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration) +15
System.Data.Entity.MigrateDatabaseToLatestVersion`2.InitializeDatabase(TContext context) +69
System.Data.Entity.Internal.<>c__DisplayClasse`1.<CreateInitializationAction>b__d() +76
System.Data.Entity.Internal.InternalContext.PerformInitializationAction(Action action) +60
System.Data.Entity.Internal.InternalContext.PerformDatabaseInitialization() +337
System.Data.Entity.Internal.LazyInternalContext.<InitializeDatabase>b__4(InternalContext c) +7
System.Data.Entity.Internal.RetryAction`1.PerformAction(TInput input) +110
System.Data.Entity.Internal.LazyInternalContext.InitializeDatabaseAction(Action`1 action) +198
System.Data.Entity.Internal.LazyInternalContext.InitializeDatabase() +73
System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType) +27
System.Data.Entity.Internal.Linq.InternalSet`1.Initialize() +53
System.Data.Entity.Internal.Linq.InternalSet`1.GetEnumerator() +15
System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable<TResult>.GetEnumerator() +53
System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +369
System.Linq.Enumerable.ToList(IEnumerable`1 source) +58
OrlandoAppraiser.Controllers.PartialsController.Appraisers() +34
lambda_method(Closure , ControllerBase , Object[] ) +62
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +14
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +157
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
System.Web.Mvc.Async.AsyncControllerActionInvoker<BeginInvokeSynchronousActionMethod>b__36(IAsyncResult asyncResult, ActionInvocation innerInvokeState) +22
...
...
[HttpException (0x80004005): Error executing child request for handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerAsyncWrapper'.]
System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) +3122279
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage) +76
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) +28
System.Web.HttpServerUtilityWrapper.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) +19
System.Web.Mvc.Html.ChildActionExtensions.ActionHelper(HtmlHelper htmlHelper, String actionName, String controllerName, RouteValueDictionary routeValues, TextWriter textWriter) +464
System.Web.Mvc.Html.ChildActionExtensions.Action(HtmlHelper htmlHelper, String actionName, String controllerName, RouteValueDictionary routeValues) +83
System.Web.Mvc.Html.ChildActionExtensions.Action(HtmlHelper htmlHelper, String actionName, String controllerName) +11
ASP._Page_Views_Home_Index_cshtml.Execute() in c:\DWASFiles\sites\orlandoappraiser\VirtualDirectory0\site\wwwroot\Views\Home\Index.cshtml:14
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +198
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +104
System.Web.WebPages.StartPage.RunPage() +17
System.Web.WebPages.StartPage.ExecutePageHierarchy() +64
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +78
System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +235
System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +107
System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +291
System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +56
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +420
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +52
System.Web.Mvc.Async.<>c__DisplayClass28.<BeginInvokeAction>b__19() +173
System.Web.Mvc.Async.<>c__DisplayClass1e.<BeginInvokeAction>b__1b(IAsyncResult asyncResult) +100
System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +27
System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +13
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +36
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +54
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +39
System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller) +12
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +28
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +54
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +29
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__4(IAsyncResult asyncResult, ProcessRequestState innerState) +21
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +36
System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +54
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +31
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9631764
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
Sorry about all of that, but I wanted to make sure I gave as much info about the problem as possible.
That error is typically an indication that your connection string in your web.config is not formatted correctly.
Are you doing any transforms of your web.config as part of deployment (e.g. changing the connection string on Release build)?

ASP.NET MVC 3: Accessing the HTTP request in a view

I have a site with a navigation menu that contains links to various pages. In the menu's ASPX view, we make a call to a model method. The model method executes the authorization filter for each action in a hard-coded list, and the results are used to decide what links to render.
This has worked fine in the past, and still does for most of our users. Unfortunately, a user is now frequently getting errors like the one shown below. The quick summary is that we're getting a NullReferenceException when calling the IsAjaxRequest() method on the request while rendering the view (via code in a custom authorization filter).
The error doesn't occur every time this page is rendered, and I've only been able to personally recreate it once. It has been a persistent issue for one of our users for at least a week now.
I'm guessing that the HttpRequest is being invalidated at some point before the view processing begins, but I can't find anything to confirm that. Could this be the problem? Or could it be caused by one of the servers between the user and our web server, like a proxy or our firewall?
Here's the stack trace:
System.Web.HttpException (0x80004005): Error executing child request for handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerWrapper'. ---> System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at System.Web.HttpServerVarsCollection.Get(String name)
at System.Web.HttpRequest.get_Item(String key)
at System.Web.HttpRequestWrapper.get_Item(String key)
at System.Web.Mvc.AjaxRequestExtensions.IsAjaxRequest(HttpRequestBase request)
at MySite.WebLibrary.Utilities.Mvc.MvcExtensions.SetUnauthorizedHelper(ControllerContext context, Action`1 setResult) in C:\WIP\MySite\src\WebLibrary.Common\Utilities\Mvc\MvcExtensions.cs:line 22
at MySite.WebLibrary.Utilities.Mvc.MvcExtensions.SetUnauthorized(AuthorizationContext authorizationContext) in C:\WIP\MySite\src\WebLibrary.Common\Utilities\Mvc\MvcExtensions.cs:line 12
at MySite.WebLibrary.Utilities.Mvc.AuthorizeRoleAttribute.OnAuthorization(AuthorizationContext filterContext) in C:\WIP\MySite\src\WebLibrary.Common\Utilities\Mvc\AuthorizeRoleAttribute.cs:line 19
at MySite.WebLibrary.Models.NavItemModel.ActionIsAuthorized(ControllerContext controllerContext, ActionDescriptor actionDescriptor) in C:\WIP\MySite\src\WebLibrary\Models\NavItemModel.cs:line 126
at MySite.WebLibrary.Models.NavItemModel.HasActionPermission(String actionName, String controllerName) in C:\WIP\MySite\src\WebLibrary\Models\NavItemModel.cs:line 105
at MySite.WebLibrary.Models.NavItemModel.get_CanAccess() in C:\WIP\MySite\src\WebLibrary\Models\NavItemModel.cs:line 82
at ASP.views_shared_navitem_ascx.__Render__control1(HtmlTextWriter __w, Control parameterContainer)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
at System.Web.UI.Control.Render(HtmlTextWriter writer)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
at System.Web.Mvc.ViewPage.Render(HtmlTextWriter writer)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.HandleError(Exception e)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at System.Web.Mvc.ViewPage.ProcessRequest(HttpContext context)
at System.Web.Mvc.ViewUserControl.ViewUserControlContainerPage.ProcessRequest(HttpContext context)
at System.Web.Mvc.ViewPage.RenderView(ViewContext viewContext)
at System.Web.Mvc.ViewUserControl.RenderViewAndRestoreContentType(ViewPage containerPage, ViewContext viewContext)
at System.Web.Mvc.ViewUserControl.RenderView(ViewContext viewContext)
at System.Web.Mvc.WebFormView.RenderViewUserControl(ViewContext context, ViewUserControl control)
at System.Web.Mvc.WebFormView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection)
at ASP.views_shared_navigation_ascx.__Render__control1(HtmlTextWriter __w, Control parameterContainer)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
at System.Web.UI.Control.Render(HtmlTextWriter writer)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
at System.Web.Mvc.ViewPage.Render(HtmlTextWriter writer)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at System.Web.Mvc.ViewPage.ProcessRequest(HttpContext context)
at System.Web.Mvc.ViewUserControl.ViewUserControlContainerPage.ProcessRequest(HttpContext context)
at System.Web.Mvc.ViewPage.RenderView(ViewContext viewContext)
at System.Web.Mvc.ViewUserControl.RenderViewAndRestoreContentType(ViewPage containerPage, ViewContext viewContext)
at System.Web.Mvc.ViewUserControl.RenderView(ViewContext viewContext)
at System.Web.Mvc.WebFormView.RenderViewUserControl(ViewContext context, ViewUserControl control)
at System.Web.Mvc.WebFormView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection)
at System.Web.Mvc.Html.RenderPartialExtensions.RenderPartial(HtmlHelper htmlHelper, String partialViewName, Object model)
at ASP.views_shared_inside_master.__Render__control4(HtmlTextWriter __w, Control parameterContainer)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
at System.Web.UI.Control.Render(HtmlTextWriter writer)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
at ASP.views_shared_site_master.__Render__control1(HtmlTextWriter __w, Control parameterContainer)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
at System.Web.UI.Control.Render(HtmlTextWriter writer)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
at System.Web.UI.Control.Render(HtmlTextWriter writer)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
at System.Web.Mvc.ViewPage.Render(HtmlTextWriter writer)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at System.Web.Mvc.ViewPage.ProcessRequest(HttpContext context)
at ASP.views_manageusers_users_aspx.ProcessRequest(HttpContext context)
at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.<>c__DisplayClass1.<ProcessRequest>b__0()
at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.<>c__DisplayClass4.<Wrap>b__3()
at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.Wrap[TResult](Func`1 func)
at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.Wrap(Action action)
at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.ProcessRequest(HttpContext context)
at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride)
at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride)
at System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage)
at System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm)
at System.Web.HttpServerUtilityWrapper.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm)
at System.Web.Mvc.ViewPage.RenderView(ViewContext viewContext)
at System.Web.Mvc.WebFormView.RenderViewPage(ViewContext context, ViewPage page)
at System.Web.Mvc.WebFormView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass1c.<>c__DisplayClass1e.<InvokeActionResultWithFilters>b__1b()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass1c.<>c__DisplayClass1e.<InvokeActionResultWithFilters>b__1b()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
at System.Web.Mvc.Controller.ExecuteCore()
at System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext)
at System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext)
at System.Web.Mvc.MvcHandler.<>c__DisplayClass6.<>c__DisplayClassb.<BeginProcessRequest>b__5()
at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass1.<MakeVoidDelegate>b__0()
at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End()
at System.Web.Mvc.MvcHandler.<>c__DisplayClasse.<EndProcessRequest>b__d()
at System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f)
at System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action)
at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult)
at System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
The problem was caused by the RequestContext being stored in a static variable in the model. When multiple users used the site, there was a chance that the HttpRequest would be reassigned and disposed by one user while another user's request was in progress.
The disposed HttpRequest was the cause of this error, and other similar ones that we're no longer seeing since deploying this fix.

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