Many parts of admin panel not loading

OJS 3.2.1.1

As of this morning many parts of admin panel are not loading, for example neither submissions or plugin gallery.

Eror log only repeats this line, but that’s been going on for few months:

[31-Jan-2023 10:57:04 Europe/Belgrade] PHP Warning:  assert(): No status key could be found for ReviewAssignment on 605 failed in /home/vetglasnik/www/lib/pkp/classes/submission/reviewAssignment/ReviewAssignment.inc.php on line 605

One different thing in log from this morning was this:

[31-Jan-2023 00:04:08 Europe/Belgrade] PHP Notice:  Undefined index: file in /home/vetglasnik/www/files/journals/5/articles/245/submission/245-49-5492-1-2-20230131.phar on line 43
[31-Jan-2023 00:04:08 Europe/Belgrade] PHP Notice:  Undefined index: file in /home/vetglasnik/www/files/journals/5/articles/245/submission/245-49-5492-1-2-20230131.phar on line 44
[31-Jan-2023 00:04:08 Europe/Belgrade] PHP Notice:  Undefined index: file in /home/vetglasnik/www/files/journals/5/articles/245/submission/245-49-5492-1-2-20230131.phar on line 45

We tried deleting the submission in question but issue persists.

Dev console from chrome shows this, but not on all pages:

DevTools failed to load source map: Could not parse content for https://veterinarskiglasnik.rs/lib/pkp/lib/vendor/tinymce/tinymce/skins/lightgray/skin.min.css.map: Unexpected token '<', "
	
<!DOCTYPE "... is not valid JSON

Just to add that we tried clearing the cache.

Nevermind, seems like malware added some script to index.php which prevented loading. Thread can be locked.