Video Transcription to SRT File using Whisper

Hi
So I wanted to create an automation that transcribes either video (mp4, mov) or audio files (mp3, wav) to an SRT file using Whisper.
The trigger is the upload to a certain google drive folder. However, whenever I test the scenario, I get the error 400. Check the attached files for the error and for how I set up OpenAI module.
I am happy for any feedback. Thank you!