Unsupported Authentication error when Invoking the External System API

Hello Everone,

We are facing an issue when trying to hit the endpoint with the below header parameters.

"Unsupported authentication"

"This request requires authentication but does not specify the type of authentication expected HTTP/1.1 401 Unauthorized" 

Note: 

1. Not using any connected system

2. Using the authentication as "None"

3. We have the "Authorization" header param, and we are constructing the value using "Cryptography Hash Functions" plugin from app market.

Please let me know if anyone come across this error before.

Thank You,

Sneha.