Lighting and skybox issues (pls halp)

Hello, people. I was casually making a map, and then I decided to test it. After compiling the map, I saw THIS. I'm not new to Hammer, in fact I'm mapping for about 2 years or so, but this is the first time this issue occured. I should notice that its HDR Compile, but I tried to recompile with Fast settings but result is stil the same.

The skybox I used: sky_tf2_04 with arena_byre settings.

Compile log(pastebin): https://pastebin.com/nn8SEWvZ

Thanks everyone in advance!

 

Theres your problem, you have a func_detail with a displacement in it.

 

AsG_Alligator thank you very much.