Visual editor not loading after new installation, loading bar stops at 3/4

Describe the issue / Steps to reproduce:
Visual editor not loading after new installation, loading bar stops at 3/4.

Expected behavior:
visual editor loading fine

What was the error message/error log?
No errors in the error.log php-fpm and nginx file except

2024/08/07 13:15:29 [error] 36272#36272: *615 open() “/usr/share/nginx/html/bluespice/rest.php/contentdroplets/droplets” failed (20: Not a directory), client: 172.22.xx.xx, server: localhost, request: “GET /bluespice/rest.php/contentdroplets/droplets HTTP/1.1”, host: “172.22.x.x”, referrer: "http://172.xx.x.xx

Screenshots

System info:

  • OS: Almalinux 9.2
  • Server: Nginx 1.26.1
  • PHP: PHP 8.3 (also not working with 8.2)
  • Database: 10.5.22-MariaDB
  • BlueSpice version: 4.5.1
  • Browser version: Edge Version 127.0.2651.86 and Firefox 128
  • Installation behind Enterprise Proxy! No direct internet connection

Hello bsdmonster,
thank you for your contribution to our forum!

We would need more information about this error. Can you send us the information from the developer console? Here is a description of how to find the required information: How to debug - BlueSpice Wiki

best regards