Runtime Error with Lost Mines of Phandelver, help! :(

[Snackbar]

So when i go to the Sword Coast overhead map with the little red tabs i can click as a GM to get detail, i click on them and get this error.

Runtime Error: desktop: Unable to create window with invalid class [refmanual:Ruins of Thundertree@DD Lost mine of Phandelver]

The part of the error that says Thundertree changes depending on which little tab im clicking on, on that main image.

[Zacchaeus]

Hi. Snackbar. Welcome to FG.

This is a known issue and affects only that map. Hopefully we'll get it fixed soon.