Unity Error in Editor

Hello! I am getting this error in my Unity scene:
“Destroying assets is not permitted to avoid data loss”
The error count is in the thousands, happening multiple times a frame I think. Any idea what could be going on? The error logging is causing my scene to slow down a lot. The only somewhat non-standard thing I am doing is I am using a CesiumTileExcluder, but that’s following the suggestions online so it should be fine!

Thanks so much!

Hi @benboesel,

Unfortunately, this is a known issue when working with copies of the default materials. We haven’t had a chance to address this, but you can check out this Github issue for a workaround.