Is There Already a Safe Upgrade Guide from Debian 12 to Debian 13?

Has anyone already tested a reliable and secure migration process from Debian 12 (Bookworm) to Debian 13 (Trixie)?

 

After upgrading a server with ISPConfig from Debian 12 (Bookworm) to Debian 13 (Trixie), Apache failed to start with this error:

Cannot load /usr/lib/apache2/modules/mod_python.so
The issue was caused by an old mod_python configuration left enabled after the upgrade, even though the module is no longer available/supported.
No websites or ISPConfig services were using mod_python.
Fix:

sudo a2dismod python
sudo apachectl configtest
sudo systemctl restart apache2

After disabling the obsolete module, Apache and ISPConfig worked normally again.