Hey, I want to automate zeevou.com with n8n and for that I have to “partner up” with Zeevou to use their OpenAPI.
For that, I have to submit a form about my personal information and the OAuth 2.0 redirect URL.
I used “https://oauth.n8n.cloud/oauth2/callback” for that.
Somehow I get that error and I can’t submit that form.
I already messaged their support and they told me it’s nothing on their end and it has to do with n8n. Does anybody know why?
Hi @teodor_moisa Welcome!
I think the issue is with the url, the standard call back url is something like this:
https://<your-instance>.app.n8n.cloud/rest/oauth2-credential/callback
So consider using something like that.
Hey Anshul,
thank you for your reply!
I tried that but I still have the same error showing up
I think then it’s probably an error on zeevou site not on your n8n, as call back URLs are meant to be live and working, i suppose your n8n instance if not localHosted, and is either on n8n cloud or on some VPS running always so that it is accessible to the internet. I think you should try making sure everything other then zeevou works with oauth 2.0 setup. Let me know how this goes.
welcome to the n8n community @teodor_moisa
From what I can see, it looks like the issue is happening during the token exchange. I’d double-check the token endpoint and the overall OAuth config. That Upstream API error in the screenshot is a big hint, it usually pops up right after authorization when n8n tries to swap the code for an access token. I’d re-verify the Zeevou setup and maybe try hitting the token endpoint outside of n8n just to rule that out.
