I think ground mesh or sky sphere in that scene has overlapping UVs, don’t worry about it, it’s not your mesh. You could delete or replace the circle platform / sphere and it will go away. It should say in the error what mesh it’s from.
I think ground mesh or sky sphere in that scene has overlapping UVs, don’t worry about it, it’s not your mesh. You could delete or replace the circle platform / sphere and it will go away. It should say in the error what mesh it’s from.