CORS error in Firefox (Chrome works)

For my Cloud project with Next.js,I am getting CORS errors when attempting createDocument(), but in Chrome it all works fine:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://cloud.appwrite.io/v1/databases/***/collections/***/documents. (Reason: header ‘user-agent’ is not allowed according to header ‘Access-Control-Allow-Headers’ from CORS preflight response).

I am new to web development and wonder if there'n an easy solution for this? Maybe it's a browser configuration on my side, but a friend of mine who I asked to test it said that nothing happened, so I assume he also had an error in the background.

Again, Chrome works as expected with no changes to the code or Appwrite console🤔

TL;DR

Developers are experiencing CORS errors in Firefox but not in Chrome. They suspect Firefox is not sending specific headers like Chrome does. This is causing issues with requests to Cloud project. Possible solution is to check browser configurations or run tests on different devices.

I inspecter the Request Headers in the Browser Networks tab and it seems as iif Firefox doesn't sent the specific headers.