I tried rebooting my pc, didn't work.
So, I thought I'd see what local files the game had and see if there was some sort of "cache" that could be cleaned.
I found the "LevelCache" folder and tried to delete everything in it.
When I did this I got an error message saying that a folder named: "15476" inside the LevelCache folder is unavailable.

Note: I have BG3 installed on C: (an SSD).

----

Clearing the LevelCache folder and verifying game files didn't resolve the issue.