In AEM 6.5 onPrime

I have a AEM brand portal Setting which i converted from JWT To Oauth

When i check the health of my IMS Configuration, its showing unhealthy configuration hostname may not be empty.

The Same Oauth setting is working in my local instance.

Please provide any inputs on what configuration i might be missing on server.

I have created the IMS configuration with Oauth option and provided all required values from developer console project auth.

I also tested the Oauth in POSTMAN and its generating the Access Token