This is due to an incorrect path used in the programming that causes the game to read from a folder that doesn't have any content


A temporary remedy:

On finder, press Shift + Command + G
Then copy and paste this:
~/Library/Application Support/Steam/steamapps/workshop/content/674940
After your at the folder, copy all the folders inside (These are the maps you subscribed to)
Press Shift + Command + G again, but this type enter:
~/Library/Application Support/Steam/steamapps/commons/Workshop/Content/674940
Paste the folders into the folder.

Note that you will have to do this everytime you subscribe to a new map if you want to use that map.

Hope that helps

thanks a ton

Oof I tried this but it seems the second pathway leads to a folder that doesn't exist.