I get this error when I try and build the lighting for my 2D game. However I looked this up and it said that this is related to the scaling to be 0. So when I checked the scales were all 1’s no 0’s.
That’s not your mesh scale. Is the scale inside editor and you can modify this as you like. Recheck your imported mesh for errors. Your mesh scale should be 1 inside dcc. Maybe post a screenshot?
Where in the sprite editor? I cannot find it.