I’m running n8n (workflow automation tool) on Fly.io, and it works fine. Now I’m trying to connect Google services like Gmail or Google Sheets using OAuth2.
I created a Google Cloud OAuth 2.0 Client ID, and I added the client_id and client_secret in n8n credentials. But when I try to authenticate, I get this error from Google:
In the error URL, I see:
redirect_uri=https://flyn8n-thrumming-feather-2258.fly.dev/rest/oauth2-credential/callback
In my Google Cloud Console, I added this exact redirect URI:
https://flyn8n-thrumming-feather-2258.fly.dev/rest/oauth2-credential/callback
I also set up the OAuth consent screen in testing mode and added my Gmail as a test user.
But the error is still there.
What I already did:
- Checked that the redirect URI matches 100%App is in Testing mode, and my account is listed as test user