[SOLVED] Weird Triangles on Ragdoll Mesh

Hello! There are some weird triangles on my ragdoll mesh. I think it may have to do with a bone but I could not find it. I thought it was the pelvis but it was not because when I had moved it, it didn’t change the weird triangles. In the mean time, I will continue to work on it.
Project: https://playcanvas.com/editor/scene/2022241

I have fixed the problem!
Anyways, I was using an inner spine instead of the outer spine as the body.