Just Updated Plex Media Server - Libraries are Inaccessible

Server Version#: v.1.43.3.10896-cb3ebc72d
Player Version#: None

I figure there are no dumb questions in the wake of this security update, but here goes. Humor me.

I just updated to the latest version of Plex Media Server and now all of my Libraries are grayed out with those telltale warning (:warning:) signs on each. They’re inaccessible. No matter what I do, nothing seems to fix this.

Does anyone know a solution for this, or what may have gone wrong?