Lots are missing from world

When attempting to open Evergreen Harbour in the Manage Worlds screen in The Sims 4: Eco Lifestyle, several map elements are missing. The residential lots do not appear on the map, and only community lots are visible (but cannot be used). However, it is not possible to interact with or select the community/residential lots. This issue also occurs when trying to travel to the area, as the same missing lots and navigation problems persist. I noticed this bug yesterday, and since then, it appears intermittently—sometimes the map elements show up, sometimes they don’t. However, now it’s consistently not working, and I’m unable to use it at all.