You should remove the apps-install-overwrite array from config/config.php before updating.
Then run the → nc-apps ← script with this command:
nc-apps not_shipped --unsupported --nopager
you must be patient to let it scan. That can be a little bit time consuming but the scan result it delivers is absolute acurate.
Then you can deactivate the not supported apps to see if that solves your internal server error.
Additionally, you can run the → php-updater ← script, which will find most configuration errors that have crept into the php configuration after an update like the one you did and can fix them.
h.t.h
Much and good luck,
ernolf