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I am having problem in one of your videos which is about building levels uisng snaps. The problem is that the snaps and prefabs are turning pink. I also used the asset swap tool you told but it doesn't work. Please help.
If you are using HDRP or URP, Update Materials. Go to Edit > Render Pipeline > Upgrade Project Materials to High Definition Render Pipeline.
Sorry but I also tried that but it didn't work
Sometimes materials don't automatically upgrade, but reimporting and upgrading the materials will usually fix it. You can also try selecting the materials you want to upgrade than upgrade selected instead of the project.