Need help with POP file (i dont know how to deal with it)

[Markplier]

So when i make my first MvM for my friends i got a problem that POP file sends this message:
Can't open scripts/population/crossfarm.pop.
Parse Failed in CPopulationManager::Initialize for scripts/population/crossfarm.pop
What i need to do please help

 

[Markplier]

I will send POP file in case