My game keeps crashing at random points

Slovenia doesn't belong to any strategic region and it crashes the game, also for some reason when I zoom out at a specific point the game crashes. I'm running 1.4.0 with all the DLC's

Since you made a custom ideology, puppetting any country results in them having no flag, country name, or leader portrait. Maybe see if you could either move the defaults from nonaligned into the monarchist section (I know little about hoi4 modding, but this is probably harder than its sounds) or just make the monarchist ideology nonaligned as its generally what that's supposed to represent anyway.