A large library that assists in mod creation.
Editors were moved to BeardLib-Editor a while ago, get them there BeardLib-Editor
The main documentation can be found on the wiki.
You can find them here: https://github.com/ModWorkshop/BeardLib-Templates
The mod that seems to be crashing is "Convert Gangsters" and possibly not LAS.
After removing the mod it worked for me and my friend.
try removing the mod or fixing it yourself.
solution is posted on the convert gangsters mod page