File Upload API returns 400

I’m having trouble uploading a file to the File API. My request is authorized using an API key. Here’s the response:
Problem accessing /filemanager/api/v3/files/upload

Hi @lazar Can you show us your code ?

Hey @quentin_lamamy, I was using fetch on the backend, and that’s what was causing the problems. I switched to axios and the issue got resolved!

I got a different problem now. When I open the URL that’s being returned it gives me 404.

It’s becasue the url doesn’t exist, please post it here please