Gamma API: Fixing 401 Invalid API Key Error in n8n

Deeni F. I'd like some help with the Gamma API. I currently have a Pro plan and am trying to build a site using n8n, but I'm getting an error with the API. Here's the situation: Subject: API key not working (401 Invalid API key error) Message: I'm trying to automatically generate proposals using the Gamma API. However, even when using the API key issued according to the instructions on the official website, I always get the 401 Invalid API key error. I tested the API directly using the curl command as well as the n8n tool, but the results were the same. [Tested curl command] curl -X POST \ https://public-api.gamma.app/v0.2/generations/ \ -H "Content-Type: application/json" \ -H "Authorization: Bearer (your API key here)" \ -d '{"title": "API Direct Test", "content": "## Test Slide"}' [Returned error] {"message": "Invalid API key","statusCode": 401}