I can't make light map without any problems

Hello. I can’t make light map without any problems. With one building I’am torturing myself by one week. Probably it’s becouse one little UV seem crosses some enother little seem or point.

Building includes diferent parts and all that parts I checked and fixed, but it’s some enother little seem or point is crossing… I just wont to know, is any option which fixes any problems with UV? Becouse I dont understend - if I can’t fix this little-little mistake in one simple building, how is it possible to create entire cities on this engine

Honestly, UV mapping is one of the harder, tedious parts of modelling.

Most application have functionality for taking a layout and making sure each shell does not overlap another.

If your shells are overlapping internally then you may just need more practice or understanding of tools available to you.