I run the 126.96.36.199 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 188.8.131.52 release. Run the followng commands on your server to update it to 184.108.40.206:
tar xvfz ISPConfig-220.127.116.11.tar.gz
php -q update.php