No namespaces after upgrade from 3.5 to 4.5, namespace-pages and all attaches files missing

Configuration/Setup
1

Describe the issue / Steps to reproduce:
I upgraded from Bluespice free 3.5 to 4.5.4 (installation of webserver from scratch on a new machine) and managed to transfer the mariaDB.
Main page and all pages in namespace (Seiten) are present, all users are present. But somehow I lost my other namespaces and their pages.
When I try to add a namespace I get a warning “internal server error”.
Also, all the attached files are missing. Do I have to copy them separately?

Expected behavior:
After migration of mariaDB I expect to find all pages of my existing wiki including other namespaces than (Seiten).
I expected the attached files to be part of the database.

What was the error message/error log?
“internal server error” when trying to create a namespace

System info:

  • OS: Linux mint 22 Cinnamon
  • Server: Apache2
  • PHP: 8.1
  • Database: mariaDB 10.11.8
  • BlueSpice version: BlueSpice free 4.5.4
  • Browser version: Mozilla Firefox 135.0
2

I have to add that this problem persists after starting a new installation of BlueSpice Free 4.5.4 on a clear database. Have started a different thread as the headline would be misleading otherwise.

3

After running update.php again the create-namespace-topic seems to be fixed.