Faceless Instagram Automation

I have a quick question. I am setting up an Instagram faceless automation where I want to upload a new reel every day. I am getting an error on the HTTP request. Could you please take a look and let me know how I can solve this?

I am using the MSquare template.

You have your error described in the yellow field.
"

Error: 400 Bad Request
>
{"error":...

"
Refer to your endpoint documentation for further details.