Testing tool 404 error on access token generation

I am getting a 404 error while trying to generate access token through the testing tool

Which App Type (OAuth / Chatbot / JWT / Webhook)?

Which Endpoint/s?

Screenshots (If applicable)
This is the /oauth/callback/success?code=xxxxxxxx page

Additional context
I think there is some issue with /oauth/callback/success endpoint

Hi @revanthgss,

What are you using for your OAuth Redirect URL? Are you using https://next.stoplight.io/oauth/callback/success?