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build issues

I start to build my big scene and I wait for a few minutes and when it’s done I have a flood of generally the same error:
Tree3_GeoSphere005 Object has wrapping UVs.
Tree3_GeoSphere005 Object has wrapping UVs.
Tree3_GeoSphere005 Object has wrapping UVs.

I have hundreds of these errors and I have a few:
Object has overlapping UVs.

Lightmap UV are overlapping by 93.0%. Please adjust content - Enable Error Coloring to visualize.

What do these errors mean and does anybody know how I can fix anything I have written above?

Create a 2nd uv channel with a proper lightmap: https://www.youtube.com/watch?v=z5yc-bKbHyc