It seems my callback link from n8n is not working, is there anyone know how to fix it or what I need to check?
Hey @rodskie123,
This looks like the same issue you opened here: OAuth Callback URL is localhost:5678 link is not accessible I am not sure if you meant to start 2 posts but for now we can work on the other post and ignore this one.
sure 
thank you for your reply
Hello, good day, the same thing happens to me, when authenticating the Google API http://localhost:5678/rest/oauth2-credential/callback there is no return