Thanks Arkshine and GuskiS.
I found one new crash type yet i dont know how to explain it yet because i dont understand it.
It is something to do with set_view(id, CAMERA_3RDPERSON)
i should recode my player model system because it is doing strange things sometimes.
I tried to be friendly with old version and code got really complicated.
Edit:
If you set player model's submodel what is blank then use set_view(id, CAMERA_3RDPERSON)
server will crash.
If you find/know something then this thread is always welcome to accept your crash cause.