Ошибка UserManager.GetClaimsAsync() – соединение закрыто

В приложении Blazor InteractiveServer, используя библиотеку удостоверений ASP.NET, я вызываю: Microsoft.AspNetCore.Identity.UserManager`1.GetClaimsAsync (пользователь TUser)

Я настроил его на использование моего класса расширения, добавив его в Program.cs.

builder.Services.AddScoped<AuthenticationStateProvider, ExAuthenticationStateProvider>();

Помимо добавления этой строки, вся ее польза заключается в том, что стек Blazor вызывает ее, когда захочет. Единственный раз, когда я напрямую вызываю что-либо в этом классе, это когда я звоню ResetNextCheck().

И он выдает (полная трассировка стека ниже).

Microsoft.EntityFrameworkCore.Query - An exception occurred while iterating over the results of a query for context type 'LouisHowe.web.Areas.Identity.Data.UserDbContext'.
System.InvalidOperationException: Invalid operation. The connection is closed.

Таблица претензий имеет 34 записи, поэтому чтение всей таблицы, если это требуется (а это не так), происходит быстро.

Единственная нестандартная часть всего этого в моем приложении — это class ExIdentityUser : IdentityUser, куда я добавляю public bool Enabled { get; set; }. Итак, мой DbContext — UserDbContext : IdentityDbContext<ExIdentityUser>.

Это происходит внутри моего ExAuthenticationStateProvider : ServerAuthenticationStateProviderGetAuthenticationStateAsync() метода.

Почему при этом вызове закрывается соединение?

Полный журнал:

Error 08:52:21 [] Microsoft.EntityFrameworkCore.Database.Command - Failed executing DbCommand (19ms) [Parameters=[@__user_Id_0='?' (Size = 450)], CommandType='Text', CommandTimeout='30']
SELECT [a].[Id], [a].[ClaimType], [a].[ClaimValue], [a].[UserId]
FROM [AspNetUserClaims] AS [a]
WHERE [a].[UserId] = @__user_Id_0

// 20 irrelevant log messages

Error 08:52:22 [] Microsoft.EntityFrameworkCore.Query - An exception occurred while iterating over the results of a query for context type 'LouisHowe.web.Areas.Identity.Data.UserDbContext'.
System.InvalidOperationException: Invalid operation. The connection is closed.
   at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of stack trace from previous location ---
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReaderAsync(RelationalCommandParameterObject parameterObject, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReaderAsync(RelationalCommandParameterObject parameterObject, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.AsyncEnumerator.InitializeReaderAsync(AsyncEnumerator enumerator, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.ExecuteAsync[TState,TResult](TState state, Func`4 operation, Func`4 verifySucceeded, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.AsyncEnumerator.MoveNextAsync() InvalidOperationException: Invalid operation. The connection is closed.
   at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of stack trace from previous location ---
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReaderAsync(RelationalCommandParameterObject parameterObject, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReaderAsync(RelationalCommandParameterObject parameterObject, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.AsyncEnumerator.InitializeReaderAsync(AsyncEnumerator enumerator, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.ExecuteAsync[TState,TResult](TState state, Func`4 operation, Func`4 verifySucceeded, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.AsyncEnumerator.MoveNextAsync()
Error 08:52:22 [] LouisHowe.web.Services.ExAuthenticationStateProvider - GetAuthenticationStateAsync() exception: Invalid operation. The connection is closed. InvalidOperationException: Invalid operation. The connection is closed.
   at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of stack trace from previous location ---
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReaderAsync(RelationalCommandParameterObject parameterObject, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReaderAsync(RelationalCommandParameterObject parameterObject, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.AsyncEnumerator.InitializeReaderAsync(AsyncEnumerator enumerator, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.ExecuteAsync[TState,TResult](TState state, Func`4 operation, Func`4 verifySucceeded, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.AsyncEnumerator.MoveNextAsync()
   at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ToListAsync[TSource](IQueryable`1 source, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ToListAsync[TSource](IQueryable`1 source, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.Identity.EntityFrameworkCore.UserOnlyStore`6.GetClaimsAsync(TUser user, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.Identity.UserManager`1.GetClaimsAsync(TUser user)
   at LouisHowe.web.Services.ExAuthenticationStateProvider.GetAuthenticationStateAsync() in D:\a\LouisHowe\LouisHowe\LouisHowe.web\Services\ExAuthenticationStateProvider.cs:line 94