I experience this issue in .net 5 SignalR
[Message]: Method not found: 'Microsoft.AspNetCore.Http.Features.IFeatureCollection Microsoft.AspNetCore.Connections.BaseConnectionContext.get_Features()'.
[Exception Message]: Method not found: 'Microsoft.AspNetCore.Http.Features.IFeatureCollection Microsoft.AspNetCore.Connections.BaseConnectionContext.get_Features()'.
[Stack Trace]: at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionContext..ctor(String connectionId, String connectionToken, ILogger logger)
at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionManager.CreateConnection(PipeOptions transportPipeOptions, PipeOptions appPipeOptions, Int32 negotiateVersion)
at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher.CreateConnection(HttpConnectionDispatcherOptions options, Int32 clientProtocolVersion)
at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher.ProcessNegotiate(HttpContext context, HttpConnectionDispatcherOptions options, ConnectionLogScope logScope)
at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher.ExecuteNegotiateAsync(HttpContext context, HttpConnectionDispatcherOptions options)
at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.ResponseCompression.ResponseCompressionMiddleware.Invoke(HttpContext context)