App.php XF\options error

Any ideas? I updated the app.php per direction from support. While waiting for a reply, I'm wondering if anyone has seen this and can help me understand what is going on here. I'm very much a novice but learning fast. Site has been down for several hours so I'm trying to do what ever I can to get things back to normal.



Backstory:

I've been reg admin for many years, recently having the forum turned over to me now (edit: recently upgraded to superadmin) getting things cleaned...