Hi there @nchisley
Judging by what I see in source code for your page, it looks like you’re using the Litespeed cache plugin.
That is quite possibly creating a conflict with Hummingbird.
However, if you did not have that plugin active when the critical error appeared on your site, then it is more likely due to either of the following:
– some other plugin recently installed or updated on that site
– a faulty update of Hummingbird
In either case, I’d recommend deactivating all other plugins and reinstalling a fresh up-to-date copy of Hummingbird. Then check for any issues.
If things work as they should, and I suspect they will, begin reactivating plugins one by one, and check for issues again with each reactivation.
Once the issue reappears, if it does, then you’ll have found the conflicting plugin, and we can proceed from there.
Cheers!
Patrick