What went wrong?

Covers and some other file uploads on the frontend fail for larger files with unclear reasons.

How can we reproduce it?

1. Access the book metadata page
2. try to upload it as a cover image above 5MB
3. see error

What Build of Grimmory are you on?

Stable

Your setup

• Version: 3.0.0
• Running on: NixOS, custom build
• Browser: Firefox 149
• OS: NixOS Linux

Screenshots or error messages (optional)

Before submitting

• I've searched existing discussions and this hasn't been reported yet
• I've reviewed this report and have completed it as fully as I can

Originally posted by @pyrox0 in #778