ispconfig admin panel error after apache2 restart

after i do Additional PHP Versions.
https://www.howtoforge.com/tutorial...fig-3-from-debian-packages-on-debian-8-and-9/
and change a old website php version to php7.2,then save ,website update take really take long time,then i forgot it's still update in admin panel and restart apache2, then admin panel get 500 error...

 

fixed!

Code:

update-alternatives --config php

then choice old ispconfig admin php version 7.0

Code:

update-alternatives --config php-cgi