Inadequate Handling of Unauthenticated Requests in Methods with Authentication

[Sreenuraj]

Issue Description:
Authentication is configured for methods in a schema. However, when attempting to access an authenticated method without providing credentials or wrong credentials, the issue arises where the server does not handle the situation appropriately. Instead of returning a 401 status code for unauthenticated requests, tested when basic authentication is set, it results in an unhandled exception.

Expected:
The expected behaviour is to gracefully handle unauthenticated requests by returning a 401 status code. This will adhere to standard HTTP conventions and facilitate proper error handling on the client side.