ASP.Net crashing on dotnet watch command-CodePudding

I have been developing a website with ASP.Net and using "dotnet watch" to view progress as I go. Everything had been working fine, but today I updated VS and now whenever I make a change and save to view the change on the website, it gives me a "HTTP ERROR 500". I attached a screenshot from my powershell and have no idea what's going on. I am going to revert to the previous version for now so I can keep working, but if anyone has a soulution or knows whats going on please let me know.

Edit: I seem to have narrowed it down to editing Layout.cshtml while using dotnet watch to be causing the error. My other pages are fine but am concerned for when the website is deployed.

Error message from Visual Studio PowerShell:

fail: Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1]
      An unhandled exception has occurred while executing the request.
fail: Microsoft.AspNetCore.Server.Kestrel[13]
      Connection id "0HMK58AJSOF5Q", Request id "0HMK58AJSOF5Q:00000007": An unhandled exception was thrown by the application.
      System.AggregateException: An error occurred while writing to logger(s). (Could not load type 'PortaBlu.Pages.Pages_Index <ExecuteAsync>d__34#1' from assembly 'PortaBlu, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.) (Could not load type 'PortaBlu.Pages.Pages_Index <ExecuteAsync>d__34#1' from assembly 'PortaBlu, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.)
       ---> System.TypeLoadException: Could not load type 'PortaBlu.Pages.Pages_Index <ExecuteAsync>d__34#1' from assembly 'PortaBlu, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
         at System.Reflection.CustomAttribute._CreateCaObject(RuntimeModule pModule, RuntimeType type, IRuntimeMethodInfo pCtor, Byte** ppBlob, Byte* pEndBlob, Int32* pcNamedArgs)
         at System.Reflection.CustomAttribute.AddCustomAttributes(ListBuilder`1& attributes, RuntimeModule decoratedModule, Int32 decoratedMetadataToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, ListBuilder`1 derivedAttributes)
         at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType)
         at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeMethodInfo method, RuntimeType caType, Boolean inherit)
         at System.Reflection.RuntimeMethodInfo.GetCustomAttributes(Type attributeType, Boolean inherit)
         at System.Attribute.GetCustomAttributes(MemberInfo element, Type attributeType, Boolean inherit)
         at System.Reflection.CustomAttributeExtensions.GetCustomAttributes[T](MemberInfo element, Boolean inherit)
         at System.Diagnostics.StackTrace.TryResolveStateMachineMethod(MethodBase& method, Type& declaringType)
         at System.Diagnostics.StackTrace.ToString(TraceFormat traceFormat, StringBuilder sb)
         at System.Diagnostics.StackTrace.ToString(TraceFormat traceFormat)
         at System.Exception.get_StackTrace()
         at System.Exception.ToString()
         at Microsoft.Extensions.Logging.Console.SimpleConsoleFormatter.CreateDefaultLogMessage[TState](TextWriter textWriter, LogEntry`1& logEntry, String message, IExternalScopeProvider scopeProvider)
         at Microsoft.Extensions.Logging.Console.SimpleConsoleFormatter.Write[TState](LogEntry`1& logEntry, IExternalScopeProvider scopeProvider, TextWriter textWriter)
         at Microsoft.Extensions.Logging.Console.ConsoleLogger.Log[TState](LogLevel logLevel, EventId eventId, TState state, Exception exception, Func`3 formatter)
         at Microsoft.Extensions.Logging.Logger.<Log>g__LoggerLog|12_0[TState](LogLevel logLevel, EventId eventId, ILogger logger, Exception exception, Func`3 formatter, List`1& exceptions, TState& state)
         --- End of inner exception stack trace ---
         at Microsoft.Extensions.Logging.Logger.ThrowLoggingError(List`1 exceptions)
         at Microsoft.Extensions.Logging.Logger.Log[TState](LogLevel logLevel, EventId eventId, TState state, Exception exception, Func`3 formatter)
         at Microsoft.Extensions.Logging.Logger`1.Microsoft.Extensions.Logging.ILogger.Log[TState](LogLevel logLevel, EventId eventId, TState state, Exception exception, Func`3 formatter)
         at Microsoft.Extensions.Logging.LoggerMessage.<>c__DisplayClass8_0.<Define>g__Log|0(ILogger logger, Exception exception)
         at Microsoft.AspNetCore.Diagnostics.DiagnosticsLoggerExtensions.UnhandledException(ILogger logger, Exception exception)
         at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)
         at Microsoft.AspNetCore.Watch.BrowserRefresh.BrowserRefreshMiddleware.InvokeAsync(HttpContext context)
         at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext](IHttpApplication`1 application)
       ---> (Inner Exception #1) System.TypeLoadException: Could not load type 'PortaBlu.Pages.Pages_Index <ExecuteAsync>d__34#1' from assembly 'PortaBlu, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
         at System.Reflection.CustomAttribute._CreateCaObject(RuntimeModule pModule, RuntimeType type, IRuntimeMethodInfo pCtor, Byte** ppBlob, Byte* pEndBlob, Int32* pcNamedArgs)
         at System.Reflection.CustomAttribute.AddCustomAttributes(ListBuilder`1& attributes, RuntimeModule decoratedModule, Int32 decoratedMetadataToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, ListBuilder`1 derivedAttributes)
         at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType)
         at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeMethodInfo method, RuntimeType caType, Boolean inherit)
         at System.Reflection.RuntimeMethodInfo.GetCustomAttributes(Type attributeType, Boolean inherit)
         at System.Attribute.GetCustomAttributes(MemberInfo element, Type attributeType, Boolean inherit)
         at System.Reflection.CustomAttributeExtensions.GetCustomAttributes[T](MemberInfo element, Boolean inherit)
         at System.Diagnostics.StackTrace.TryResolveStateMachineMethod(MethodBase& method, Type& declaringType)
         at System.Diagnostics.StackTrace.ToString(TraceFormat traceFormat, StringBuilder sb)
         at System.Diagnostics.StackTrace.ToString(TraceFormat traceFormat)
         at System.Exception.get_StackTrace()
         at System.Exception.ToString()
         at System.Text.StringBuilder.Append(Object value)
         at Microsoft.Extensions.Logging.EventLog.EventLogLogger.Log[TState](LogLevel logLevel, EventId eventId, TState state, Exception exception, Func`3 formatter)
         at Microsoft.Extensions.Logging.Logger.<Log>g__LoggerLog|12_0[TState](LogLevel logLevel, EventId eventId, ILogger logger, Exception exception, Func`3 formatter, List`1& exceptions, TState& state)<---

CodePudding user response：

As a temporary solution you can start the app in debug mode from Visual Studio (CTRL F5) and have the "Hot reload on file save" checked.

CodePudding user response：

This appears to be a known bug, whose fix is already on the way. See one of the related Github issues.