My maps are breaking and I can't figure out why

[Salivan Bufrat]

I recently became interested in map making in Hamer, but during creation I ran into the same problem after a while: after compilation, walls disappear, and changes are not taken into account, but the program saves all changes. I already have two cards that are so broken, I tried to look for solutions on the Internet, but I couldn’t find anything that could answer my question why this is happening. I will attach a screenshots below

 

[Party engineer tf2]

i cant even get hammer to boot upthe map into tf2