what does:

"Ran out of transform space for Ghoul2 Models. Adjust MiniHeapSize in SV_SpawnServer"

mean and how do i fix it?

That usually happens when too many entities are being spawned/displayed on screen all at once. And i dont think theres a way to fix it, but just try not adding too much NPCs...etc into the area. I usually get this error when i do that. (Note that even a huge mapsize doesnt mean you can spawn more stuff, it'll still crash with that error)