My maps cant compile with lighting and some textures instantly go missing ingame

[willgames]

(SOLVED CHECK REPLIES) 
Hi all!

I'm making a map and when I compile, they always compile with fullbright  and some textures go 'missing' even when they aren't, and they work completely fine within the editor, you can see an example below. Its pretty unbearable so I switched out the missing texture's texture to simply the color black. Any help will be much appreciated 


Here is also my compile log...

[willgames]

  I found a fix! (Applies to LeakNet) Apply a light environment entity EVEN IF YOUR MAP IS NOT TAKEN PLACE OUTDOORS!!! Now your map will compile with lighting