What does this exception mean? - grails

Question

I am getting this message while building my Grails app with MAVEN, After bootstrap is done I am getting this exception on my logs. Can someone direct me where to look for the cause of this exception? What does it trying to say ?
2012-09-26 13:00:45,532 [Thread-7] ERROR StackTrace - Full Stack Trace:
org.springframework.beans.factory.BeanCreationNotAllowedException: Error creating bean with name 'instanceControllersApi': Singleton bean creation not allowed while the singletons of this factory are in destruction (Do not request a bean from a BeanFactory in a destroy method implementation!)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:212)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.codehaus.groovy.grails.commons.spring.ReloadAwareAutowireCapableBeanFactory.autowireBeanInAutowireByName(ReloadAwareAutowireCapableBeanFactory.java:213)
at org.codehaus.groovy.grails.commons.spring.ReloadAwareAutowireCapableBeanFactory.populateBeanInAutowireByName(ReloadAwareAutowireCapableBeanFactory.java:205)
at org.codehaus.groovy.grails.commons.spring.ReloadAwareAutowireCapableBeanFactory.autowireBeanProperties(ReloadAwareAutowireCapableBeanFactory.java:192)
at org.springframework.beans.factory.config.AutowireCapableBeanFactory$autowireBeanProperties.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)
at org.springframework.beans.factory.config.AutowireCapableBeanFactory$autowireBeanProperties.call(Unknown Source)
at org.codehaus.groovy.grails.plugins.scaffolding.ScaffoldingGrailsPlugin.configureScaffoldingController(ScaffoldingGrailsPlugin.groovy:116)
at org.codehaus.groovy.grails.plugins.scaffolding.ScaffoldingGrailsPlugin$configureScaffoldingController.callStatic(Unknown Source)
at org.codehaus.groovy.grails.plugins.scaffolding.ScaffoldingGrailsPlugin.configureScaffolding(ScaffoldingGrailsPlugin.groovy:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:361)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:877)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:46)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:145)
at org.codehaus.groovy.grails.plugins.scaffolding.ScaffoldingGrailsPlugin$_closure2_closure10.doCall(ScaffoldingGrailsPlugin.groovy:77)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:272)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:877)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:46)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:141)
at org.codehaus.groovy.grails.plugins.scaffolding.ScaffoldingGrailsPlugin$_closure2_closure10.doCall(ScaffoldingGrailsPlugin.groovy)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:272)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:877)
at groovy.lang.Closure.call(Closure.java:412)
at groovy.lang.Closure.call(Closure.java:406)
at groovy.lang.Closure.run(Closure.java:490)
at java.lang.Thread.run(Thread.java:662)
2012-09-26 13:00:45,548 [Thread-7] ERROR StackTrace - Full Stack Trace:
org.springframework.beans.factory.BeanCreationNotAllowedException: Error creating bean with name 'instanceControllersApi': Singleton bean creation not allowed while the singletons of this factory are in destruction (Do not request a bean from a BeanFactory in a destroy method implementation!)
at java.lang.Thread.run(Thread.java:662)

Answer 1

Without having any source code or your version of Grails, just looking at your Exception stacktrace, the following stuck out:
Error creating bean with name 'instanceControllersApi': Singleton bean creation not allowed while the singletons of this factory are in destruction (Do not request a bean from a BeanFactory in a destroy method implementation!)
I did a bit of research into Grails JIRA and the following JIRA issue GRAILS-8645 had the same stacktrace as you did. Take a look at the stacktrace on this JIRA issue. Per the JIRA issue, it appears to affect Scaffolding in 2.0 final, but is fixed with 2.0.1.