lightmap uv are overlapping

I get this mesh from works fine in ContentExamples,but in my project I get this error. why?

-So when you build the lights in the content examples, you dont get this message?
-where can I find this mesh to test it?
-do you still get the message when you enable coloring visualize?
-just create a propert lightmap for the mesh, this will solve the problem :slight_smile:

you can find this mesh here.It’s a epic official project.

Ok, currently dowloading so that I can test the asset :slight_smile: