Skybox is glitched

The skybox should go around my entire map, but it only goes around a fourth of it, and then the rest is glitched or something. Does anyone know how to fix this? :confused:

Check log for errors

Well I have lots of…

FindPortalSide: Couldn't find a good match for which brush to assign to a portal near (Coordinates)

…in the compile log but there is absolutely nothing wrong at all in the editor. Thinking about giving up on this map soon.

This message often appear if you have a leak (or if you have a very complex brush).

Can you put the whole log here or on pastebin ?

I think some object was too small or something, as when I resized it, it fixed itself.