I am getting this error on a site that has been functioning fine for the last 6 months or so. I have seen other posts in the forum on this, but the ones I found are related to migrating or updating sites. Neither of those apply here. The site was working fine on Friday. Today it's got issues. I haven't updated from 5.4.2.2 or changed hosts. I confirmed passwords, usernames, and everything seems to check out. I am looking into whether or not the host updated anything, but haven't received any notices to that effect.

Any thoughts would be appreciated.

Catchable fatal error: Argument 1 passed to ConfigStore::__construct() must be an instance of Database, null given, called in /data/24/2/141/150/2630476/user/2886117/htdocs/concrete/models/config.php on line 48 and defined in /data/24/2/141/150/2630476/user/2886117/htdocs/concrete/models/config.php on line 136