Wired Wired Weight

Hi there,
I try to rig a character with automatic weights and have wired results…
Bevor weighting all modifires have been applied and all vertex groups removed. I exported the mesh as obj as well and imported it again. The issue is still there. Do you know this problem and have a solution`?

I suspect that you have some screwed up normals. Check + fix your normals and try again.