Notion - Append a Page Content - Image, Error 400

Hey everyone,

I’ve just got to the end of a scenario, and I want to append an image from a URL to a notion page.

For some reason, no mater what URL I try, I get the 400 error. I’ve tried appending content other than an image, with success, so the page ID works etc.

In the image, I’m using a perfectly accessible image url found through google to test with.

Any suggestions on what’s going wrong / what I might be doing wrong?

Thanks in advance!