Terrain Purple after upgrading from 2018.2 to 2018.3

I have a project with terrain that shows up fine in 2018.2, but when I upgrade to 2018.3 it shows up as purple.

The Terrain layers and images seem to import ok. But I don’t know why the terrain shows up as purple. Can anyone help? What more information is needed? I’ve had this happen with two projects I tried upgrading already.

I’m having this same problem. Any ideas?

Menu > Edit > RenderPipeline > Upgrade Project Materials to LightWeightRP Materials

Terrain Setting
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Basic Terrain > Materials select Custom

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Drag this…

143590-2019-7-26-16-5-8.png
It’s well now…