Invalid Client

Problem/Motivation

Hi guys, I am not able to generate token using grant "client_crendtials". What I did was generate keys and create clients. then used postman to generate token "https://xyz.com/oauth/token" with parameters "grant_type,client_id,client_secret". I have verified these parameters are correct. But I am only getting "invalid client" response i.e

{"error":"invalid_client","error_description":"Client authentication failed","message":"Client authentication failed"}

This is working in production environment but not in staging environment. Difference between production and staging environment is staging has Basic Authentication enable to avoid unwanted user access. Will this cause any issue?