Ok so i am making a game with skinned meshes as characters. But when i import the mesh with avatar importer the mesh gets really wierd (link to picture down below)

https://gyazo.com/775f2883ced810aa17db1d07a7d9bf53

i have checked and the normals arent flipped so i don't understand whats the problem. In the picture you can se triangles gone but i do not even have any triangles in my mesh so this is really strange.

Well if you might know anything.. Please respond.