Angular SpaTemplate 2.0.0-rc2-final on full net error #164

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fergalmoran · 2025-08-09T17:15:14Z

fergalmoran commented

2025-08-09 17:15:14 +00:00

Originally created by @hodzanassredin on 2/19/2018

dotnet new --install Microsoft.DotNet.Web.Spa.ProjectTemplates::2.0.0-rc2-final
dotnet new angular
change target net461
Nuget: remove Microsoft.AspNetCore.All, add Microsoft.AspNetCore, Microsoft.AspNetCore.Mvc

Result:

fail: Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[0]
An unhandled exception has occurred while executing the request
System.ArgumentException: The 'Accept' header must be modified using the appropriate property or method.
Parameter name: name
at System.Net.WebHeaderCollection.ThrowOnRestrictedHeader(String headerName)
at System.Net.WebHeaderCollection.Set(String name, String value)
at Microsoft.AspNetCore.SpaServices.Extensions.Proxy.SpaProxy.d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.AspNetCore.SpaServices.Extensions.Proxy.SpaProxy.d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.AspNetCore.Builder.SpaProxyingExtensions.<>c__DisplayClass2_0.<b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.AspNetCore.Builder.RouterMiddleware.d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.d__7.MoveNext()
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
Request finished in 99.5188ms 500 text/html; charset=utf-8

*Originally created by @hodzanassredin on 2/19/2018* dotnet new --install Microsoft.DotNet.Web.Spa.ProjectTemplates::2.0.0-rc2-final dotnet new angular change target <TargetFramework>net461</TargetFramework> Nuget: remove Microsoft.AspNetCore.All, add Microsoft.AspNetCore, Microsoft.AspNetCore.Mvc Result: > fail: Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[0] > An unhandled exception has occurred while executing the request > System.ArgumentException: The 'Accept' header must be modified using the appropriate property or method. > Parameter name: name > at System.Net.WebHeaderCollection.ThrowOnRestrictedHeader(String headerName) > at System.Net.WebHeaderCollection.Set(String name, String value) > at Microsoft.AspNetCore.SpaServices.Extensions.Proxy.SpaProxy.<AcceptProxyWebSocketRequest>d__8.MoveNext() > --- End of stack trace from previous location where exception was thrown --- > at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) > at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) > at Microsoft.AspNetCore.SpaServices.Extensions.Proxy.SpaProxy.<PerformProxyRequest>d__4.MoveNext() > --- End of stack trace from previous location where exception was thrown --- > at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) > at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) > at Microsoft.AspNetCore.Builder.SpaProxyingExtensions.<>c__DisplayClass2_0.<<UseProxyToSpaDevelopmentServer>b__0>d.MoveNext() > --- End of stack trace from previous location where exception was thrown --- > at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) > at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) > at Microsoft.AspNetCore.Builder.RouterMiddleware.<Invoke>d__4.MoveNext() > --- End of stack trace from previous location where exception was thrown --- > at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) > at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) > at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.<Invoke>d__7.MoveNext() > info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] > Request finished in 99.5188ms 500 text/html; charset=utf-8

fergalmoran closed this issue

2025-08-09 17:15:14 +00:00

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Reference: github/JavaScriptServices#164