<a name="p-547990-hey-guys-i-cant-connect-my-openai-credential-on-my-n8n-platform-but-before-it-was-working-well-why-i-created-a-new-account-yesterday-and-the-problem-happened-like-this-1" class="anchor" href="#p-547990-hey-guys-i-cant-connect-my-openai-credential-on-my-n8n-platform-but-before-it-was-working-well-why-i-created-a-new-account-yesterday-and-the-problem-happened-like-this-1" aria-label="Heading link"> Hey guys, I can’t connect my OpenAI credential on my n8n platform, but before it was working well. Why ? I created a new account yesterday and the problem happened like this. I already made those 3 solutions : Create a new secret key Add more $ on my OpenAI wallet Turn on all permissions on OpenAI…

[image] June_Derek_dela_vega: hostinger Hi Shinygami, I have updated my n8n to the latest stable version (2.19.4) but still encounter the same issue. I guess this needs the attention from n8n support team. Meanwhile, may I know what’re you trying to achieve? Perhaps there are some alternati…

The error config.headers.setContentType is not a function is a known bug that appeared in some n8n versions around 2.18-2.19. It’s not related to your API key or OpenAI account - it’s a compatibility issue with how the credential test request is built internally. A few things you can try: Update …

I’ve gotten the same error and have spent some time troubleshooting it before coming to the forum for help, and this post just pops out right in front :slight_smile: Here’s my environment info: Debug info core n8nVersion: 2.19.2 platform: docker (self-hosted) nodeJsVersion: 24.14.1 nodeEnv: prod…

Hi, Thank you for your detailed answer! You were right, it’s clearly a version bug. Here’s my current situation: I’m running n8n 2.19.3 on Docker (self-hosted on Hostinger) I tried to update n8n via terminal using docker compose pull and docker compose down && docker compose up -d I also …

Hi, Thanks for sharing your debug info, our setups look very similar! Here’s mine: n8n version: 2.19.3 Platform: Docker (self-hosted on Hostinger) Database: SQLite Mode: production Just like you, I’ve been stuck on this bug. I tried updating via terminal (docker compose pull + resta…

[image] WilsonT3D: As suggested by Nguyen, I triggered my workflow despite the credential test error and it works fine (with a valid API key). Most likely a bug where the error gives false alarm. As suggested by Nguyen, I triggered my workflow despite the credential test error and it works fi…

[image] WilsonT3D: As suggested by Nguyen, I triggered my workflow despite the credential test error and it works fine (with a valid API key). Most likely a bug where the error gives false alarm. Unfortunately, doesn’t work for me… [Capture d'écran 2026-05-06 195142]

same problem same scenario,just got to hostinger then making some credentials then im stock with this

The same issue and error with n8n 2.19.4 run via docker

THX, it works with AI Agent despite returning the error.

yeah it works,i didnt expect this to go on thats why i didnt try but it actually works,tnx my brother

Help connecting OpenAI credential

Questions

shinygami May 6, 2026, 5:52pm 9

Unfortunately, doesn’t work for me…

OpenAI credentials fail on n8n Cloud 2.19.3 with config.headers.setContentType is not a function

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