@dmux, are you using ANZ prior to v8.2?
This was fixed in 8.2 , see https://github.com/aspnetzero/aspnet-zero-core/pull/2955
Hi @rajamannar, can you provide the ANZ version and framework being used? Also, is there a complete error stacktrace for this exception? e,g from request begin to end.
It is recommended that version control (e.g. Git) is being setup before working with ANZ so that you can easily revert any changes you made.