Folder creation works but not file upload

[ChoppyThing]

Hello,

I'm running into an issue. Folder creation works, but uploading any file does not.
I'm getting a 500 Internal Server Error - nginx/1.24.0 from the jquery post.
I followed the installation steps right away from the documentation.

I tried looking in different logs (docker, php, nginx, symfony), but i did get any information about this error.

Has anyone come accros this issue ?
Any ideas for getting more info ?

Thanks