I’ve searched for a fix to this issue but all I have found is to either set the mesh renderer to cast two-sided shadows, or to check that the polygons of my models are welded together properly but neither of these explanations helped.
I have created my character model in C4D and exported as an .FBX, and the other model was created in MagicaVoxel editor and exported as a .OBJ and both models show these weird lines where the shadow isn’t being cast.