Site not working when I use Beaver Builder Power Pack

I’ve been using the Beaver Builder Power Pack plugin for a long time now and a lot of the items and pages on our site use it. All of a sudden, when I tried to edit a page beaver builder froze up and now my site is all jacked up. I have backed up my site and spent the last hour checking each plugin by deactivating and reactivating. I have honed in on this plugin as the site will work when Power pack is disabled, but not enabled. Any help is greatly appreciated.

I have this same problem as of today. This is the error I got.

[28-Feb-2024 17:49:36 UTC] PHP Fatal error: Array and string offset access syntax with curly braces is no longer supported in /home2/…php on line 724

Whats the rest of that line?