i'm having an issue when using substance, I made this model and make sure It's uv unwarped i'm using 25 UDIMS on this model when I export it to substance it won't load. is there anyway to fix this problem?
Going by the Red text in the error messages, there is at least on face/polygon that crosses over into another UV tile. You need to fix those. Faces/Polygons can not span Udim tiles.
The error message references UV 1,1. That is the UV in the lower left. You need to move objects or scale the objects to fit inside the UV tile. That is usually done in the DCC program where you UVed the model.