FeatureReferences`1.ThrowContextDisposed()

[kcabral817]

I'm getting scarry weird behavior in a razor page for blazor server. When I use the menu item, i have no problems. when I use the refresh button or enter the page using the url (or pressing return in the browser, the application fails, is unresponsive and make me nervous because I don't know what to do. It appears that circuit is closed, but I don't know or understand why and consequently what to do to resolve it. I noticed that Application Context is hosed up too with a lot of object disposed references.

Ideas would be greatly appreciated.

the error generated is:
Stack Trace
at Microsoft.AspNetCore.Http.Features.FeatureReferences1.ThrowContextDisposed() at Microsoft.AspNetCore.Http.DefaultHttpContext.get_User() at Csla.AspNetCore.ApplicationContextManagerHttpContext.GetUser() at Csla.ReadOnlyBase1.VerifyAuthorizationCache()
at Csla.ReadOnlyBase1.CanReadProperty(IPropertyInfo property) at Csla.ReadOnlyBase1.CanReadProperty(IPropertyInfo property, Boolean throwOnFalse)
at Csla.ReadOnlyBase1.GetProperty[P](PropertyInfo1 propertyInfo, NoAccessBehavior noAccess)
at Csla.ReadOnlyBase1.GetProperty[P](PropertyInfo1 propertyInfo)
at Amicus.Business.EnvironmentalReportLibrary.BO.EnvironmentalTotalInfo.get_DescriptionCount() in C:\Users\kcabr\source\repos\kcabral817\AmicusBuilder2\EnvironmentalReportLibrary\Amicus.Business.EnvironmentalReportLibrary\BO\EnvironmentalTotalInfo.cs:line 21
at Radzen.Blazor.RadzenPieSeries1.<SetParametersAsync>b__36_0(TItem e) at System.Linq.Enumerable.WhereEnumerableIterator1.ToList()
at Radzen.Blazor.RadzenPieSeries`1.d__36.MoveNext()

Application Context:

<title>Document</title>

	Name	Value	Type
▶	$exception	{"IFeatureCollection has been disposed.\r\nObject name: 'Collection'."}	System.ObjectDisposedException
◢	this	{Amicus.Business.EnvironmentalReportLibrary.BO.EnvironmentalTotalInfo}	Amicus.Business.EnvironmentalReportLibrary.BO.EnvironmentalTotalInfo
	◢ ApplicationContext	{Csla.ApplicationContext}	Csla.ApplicationContext
	▶ ClientContext	'this.ApplicationContext.ClientContext' threw an exception of type 'System.ObjectDisposedException'	Csla.Core.ContextDictionary {System.ObjectDisposedException}
	▶ ContextManager	{Csla.AspNetCore.ApplicationContextManagerHttpContext}	Csla.Core.IContextManager {Csla.AspNetCore.ApplicationContextManagerHttpContext}
	ExecutionLocation	Client	Csla.ApplicationContext.ExecutionLocations
	IsAStatefulContextManager	false	bool
	IsOffline	false	bool
	▶ LocalContext	'this.ApplicationContext.LocalContext' threw an exception of type 'System.ObjectDisposedException'	Csla.Core.ContextDictionary {System.ObjectDisposedException}
	▶ LogicalExecutionLocation	'this.ApplicationContext.LogicalExecutionLocation' threw an exception of type 'System.ObjectDisposedException'	Csla.ApplicationContext.LogicalExecutionLocations {System.ObjectDisposedException}
	▶ Principal	'this.ApplicationContext.Principal' threw an exception of type 'System.ObjectDisposedException'	System.Security.Claims.ClaimsPrincipal {System.ObjectDisposedException}
	▶ RuleSet	'this.ApplicationContext.RuleSet' threw an exception of type 'System.ObjectDisposedException'	string {System.ObjectDisposedException}
	▶ User	'this.ApplicationContext.User' threw an exception of type 'System.ObjectDisposedException'	System.Security.Principal.IPrincipal {System.ObjectDisposedException}
	▶ Static members
	▶ Non-Public members
	▶ BusinessRules	{Csla.Rules.BusinessRules}	Csla.Rules.BusinessRules
	▶ Description	'this.Description' threw an exception of type 'System.ObjectDisposedException'	string {System.ObjectDisposedException}
	▶ DescriptionCount	'this.DescriptionCount' threw an exception of type 'System.ObjectDisposedException'	int {System.ObjectDisposedException}
	▶ FieldManager	{Csla.Core.FieldManager.FieldDataManager}	Csla.Core.FieldManager.FieldDataManager
	IsBusy	false	bool
	IsSelfBusy	false	bool
	▶ Static members
	▶ Non-Public members

[kcabral817]

I just happened to figure this one out. It turns out the issue is with the configuration of Automapper. The line services.AddSingleton(mapper => new MapperConfiguration(cfg =>.....

Needs to be:
services.AddScoped(mapper => new MapperConfiguration(cfg =>