Issue with Oauth Missing access token

I have developed a custom application using GPT’s capabilities.

However, when attempting to sign in to the application, I encounter an error message stating “Missing token.”

Below are the URLs I have utilized in the configuration:

“callback_url”: “”,
“authorize_url”: “”,
“token_fetch_url”: “”,

I would appreciate it if anyone provide any suggestions on how to resolve this issue.

It seems like your CallbackURL in the UI is different from the one you posted above.

Said that, I’m getting the same issue after the authorization on the 3rd party API works fine.