Issue with qonto.com and OAuth2 callback

[DRone]

Describe the issue/error/question

Error is generated when this redirect_uri returns from the qonto.com oauth2 flow. It happens when I add the credentials an click “Connect my account”. I can successfully authorize at qonto.com but n8n generates an error when qonto oatuh2 redirects to:
/rest/oauth2-credential/callback?code=xxxx&scope=&state=xxxxx%3D%3D

What is the error message (if any)?

{“code”:0,“message”:“Client authentication failed (e.g., unknown client, no client authentication included, or unsupported authentication method).”}

Information on your n8n setup

• n8n version: 0.221.2
• Database you’re using (default: SQLite): SQLite
• Running n8n with the execution process [own(default), main]:
• Running n8n via [Docker, npm, n8n.cloud, desktop app]: docker

[Jon]

Hey @DRone,

Welcome to the community

Does Qonto support header as the authentication option, Looking at the docs quickly I think it is expecting Body.

[DRone]

That was literally the only parameter I never changed while doing try&error and I feel so stupid now . Thanks so much