Hi, dear friends.
I’m new to n8n, just starting out. It’s a really cool tool. I was working on a project and ran into a problem. The node keeps throwing an error, screenshots attached. I’ve done the standard things, like changing the API and address, and asked questions in GPT, DeepSpeak, and Gemini, but still no luck. If you know how to solve this, please help.
Hey Kuat, welcome to n8n!
Hard to diagnose from screenshots alone — could you paste the actual error message as text? Also, which node is throwing the error (e.g. HTTP Request, Code, a specific service node)?
With that info the community can point you in the right direction much faster.
Benjamin, hello.
Thank you very much for your attention. Error in node МОЗГ 1:
Error Message: Authorization failed - please check your credentials. Missing Authentication header.
Node Name:МОЗГ 1 (it’s a sub-node, likely an HTTP Request or an AI Agent node).
n8n Version: 2.13.3 (Cloud)
It seems like the authentication header is not being sent correctly. I have already double-checked my credentials in the credentials section, but the error persists.
the credential is probably not properly linked inside the node itself — even if it shows up fine in the Credentials section. try opening the node, removing the current credential, and re-selecting it from the dropdown. on cloud that one step usually fixes the “Missing Authentication header”.
hello @Kuat_Ziyadanov
I see that your OpenAI base URL leads to the open router. Use the credential and a chat model from the Open Router then
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Benjamin, thank you very much, changing it helped
Руддщ, thanks for the tip, I changed it.