I run the 18.104.22.168 update but the problem is not solved.
The same 500 Eroor is displayed.
Originally Posted by till
This issue has been fixed already in the 22.214.171.124 release. Run the followng commands on your server to update it to 126.96.36.199:
tar xvfz ISPConfig-188.8.131.52.tar.gz
php -q update.php