Could not find file Microsoft.AspNetCore.WebUtilities.FileBufferingReadStream - f#

Question

I'm running an Azure Function locally in Visual Studio but receive the error "Could not find file 'C:\Users\kbiondi\AppData\Local\AzureFunctionsTools\Releases\4.13.0\cli_x64\Microsoft.AspNetCore.WebUtilities.FileBufferingReadStream'. (details below).
The code that triggers this error seems to be:
let! parameters = JsonTypeProvider.AsyncLoad(req.Body.ToString())
Using let parameters = JsonTypeProvider.Load(req.Body) the function runs without problem.
I have reloaded various nuget packages and the sdk, but this problem persists.
Azure Functions Core Tools Core Tools Version: 4.0.4483 Commit
hash: N/A (64-bit) Function Runtime Version: 4.1.3.17473
[2022-05-19T18:24:10.578Z] Csproj not found in
C:\Users\kbiondi\OneDrive -
CalPERS\Repos\AzFunction_BpipeRefData\bin\Debug\net6.0 directory tree.
Skipping user secrets file configuration.
Functions:
BpipeReferenceDataRequest: [GET,POST] http://localhost:7071/api/BpipeReferenceDataRequest
For detailed output, run func with --verbose flag.
[2022-05-19T18:24:16.773Z] Host lock lease acquired by instance ID
'0000000000000000000000001F77FD18'. [2022-05-19T18:24:43.597Z]
Executing 'BpipeReferenceDataRequest' (Reason='This function was
programmatically called via the host APIs.',
Id=13a1beaf-3141-4112-a086) The Azure Function Received a
Request... Request failed with the following error:
Message: Could not find file
'C:\Users\kbiondi\AppData\Local\AzureFunctionsTools\Releases\4.13.0\cli_x64\Microsoft.AspNetCore.WebUtilities.FileBufferingReadStream'.
Source: System.Private.CoreLib
TargetSite: Microsoft.Win32.SafeHandles.SafeFileHandle
CreateFile(System.String, System.IO.FileMode, System.IO.FileAccess,
System.IO.FileShare, System.IO.FileOptions)
StackTrace: at
Microsoft.Win32.SafeHandles.SafeFileHandle.CreateFile(String fullPath,
FileMode mode, FileAccess access, FileShare share, FileOptions
options) at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String
fullPath, FileMode mode, FileAccess access, FileShare share,
FileOptions options, Int64 preallocationSize) at
System.IO.Strategies.OSFileStreamStrategy..ctor(String path, FileMode
mode, FileAccess access, FileShare share, FileOptions options, Int64
preallocationSize) at
FSharp.Data.Runtime.IO.asyncRead#219-9.Invoke(Unit unitVar) at
Microsoft.FSharp.Control.AsyncPrimitives.CallThenInvoke[T,TResult](AsyncActivation1 ctxt, TResult result1, FSharpFunc2 part2) in
D:\a_work\1\s\src\fsharp\FSharp.Core\async.fs:line 447 at
BpipeProcess.BpipeReferenceDataRequest.Pipe #1 input at line
16#21-11.Invoke(AsyncActivation1 ctxt) at BpipeProcess.BpipeReferenceDataRequest.Pipe #1 input at line 16#20-14.Invoke(AsyncActivation1 ctxt) at
Microsoft.FSharp.Control.Trampoline.Execute(FSharpFunc`2 firstAction)
in D:\a_work\1\s\src\fsharp\FSharp.Core\async.fs:line
104[2022-05-19T18:24:43.679Z] Executed 'BpipeReferenceDataRequest'
(Succeeded, Id=13a1beaf-3141-4112-a086, Duration=101ms)

Answer 1

Based on the MICROSOFT DOCUMENTATION:-
F# script (.fsx) is only supported by version 1.x of the Azure
Functions runtime. If you want to use F# with version 2.x and later
versions of the runtime, you must use a precompiled F# class library
project (.fs). You create, manage, and publish an F# class library
project using Visual Studio .
You can use in that line if wants http request e.g:- let Run(req: HttpRequestMessage, log: ILogger) =
And make sure that your folder structure looks like below format:
FunctionsProject
| - MyFirstFunction
| | - run.fsx
| | - function.json
| | - function.proj
| - MySecondFunction
| | - run.fsx
| | - function.json
| | - function.proj
| - host.json
| - extensions.csproj
| - bin
For more information please refer the aforementioned and below links:
SIMILAR ISSUE|SO THREAD
MICROSOFT DOCUMENT|Microsoft.AspNetCore.WebUtilities Namespace
BLOG|Microsoft.AspNetCore.WebUtilities FileBufferingReadStream Examples