Lightmap uv are overlapping

Development Rendering
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QQ图片20150826193215.png
QQ图片20150826193215.png809×392 40.4 KB

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

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Hi xermao,

I’m closing this thread as a duplicate offorums.unrealengine.com/showthread.php?81971-lightmap-uv-are-overlapping, please continue the conversation there.