Site was backed up with akeeba backup 4.5.1 pro.
Restore worked out fine with ANGIE. I have full access to frontend.
But I have no access to administrator backend. I call it with adminstrator secret URL, but I get an "internal server error".
So I tried all troubleshooter suggestions above. Browser cache deleted. Renamed .htacces aso, checked configuration.php.
Tried to change plugins/system/admintools/main.php.
But this file is in my installation at plugins/system/admintools/admintools/main.php.
Changed it, no access, same error.
What can I do to get backend access?
Thank you
Chris