Update.
Well it appears that you are still on php 5.6 because anyone can get to phpinfo
So I would suspect that the includes/config.inc.php file got wiped to 0 meaning the contents are gone which is another issue with that version and another reason to upgrade.
Anyway check that file with a text editor and see if it has any content and that the top few lines are correct for connecting to your database.
Maybe you have a old backup you can get a copy of that file to use.
And delete that phpinfo file or rename it to something you can remember to stop people like me seeing it..
Last edited by Ruben; 02/02/2021 2:50 PM. Reason: Added Comment
