Sorry for the delay responding, and thanks for letting me know! LancyBoi removed some of his mods, I'm sure you could find a version of the mod somewhere for personal use but I won't be sharing it... (sorry, I need to respect his wishes). I just posted this over on discord....
LancyBoi has removed some of his mods from modhub This means the Sheep Barns on the bigger sheep farm are not available as map dependencies. I'll fix this in an update soon. If you have already downloaded the map an easy fix is to open modDesc.xml and delete the contents of line 48. Save, etc and the Sheep Barn will not be required by the map. I won't be re-editing that part of the map, I'll just wait until Lancy re posts.