OAuth flow failed Error detail: Invalid null response

[asrsharma07]

Hi Developers,

When I try to fetch the access token from a third-party application, its showing the below error please refer the attached screenshot. Can anyone please help me?

[Tony Chatfield1]

Hi, unfortunately your attached partial screenshot provides nothing that would assist the community with diagnosing your issue. Have you checked\tested your target platforms end-point and response utilizing a tool like Postman so that you can confirm you have correct synax and target url?

Perhaps you could update this thread with clear details of your configuration and diagnostics?