Show I was trying to use the Aquarius Fantasy Series Fae pack. When I moved over the assets to my project a lot of the assets don't have there textures. Like tree's trucks or parts of structures just show up as pink. I did get 2 errors.
Multiple scripted importers are targeting the extension 'gltf' and have all been rejected: UniGLTF.GltfScriptedImporter (assembly: C:\Users\Alex\My project\Library\PackageCache\com.mtion.sdk@52eb6596fb5b\Plugins\ThirdParty\UniGLTF.Editor.dll), GLTFast.Editor.GltfImporter (assembly: C:\Users\Alex\My project\Library\PackageCache\com.mtion.sdk@52eb6596fb5b\Plugins\ThirdParty\glTFast.Editor.dll)
UnityEditor.AssetImporters.ScriptedImporter:RegisterScriptedImporters ()
Multiple scripted importers are targeting the extension 'glb' and have all been rejected: UniGLTF.GlbScriptedImporter (assembly: C:\Users\Alex\My project\Library\PackageCache\com.mtion.sdk@52eb6596fb5b\Plugins\ThirdParty\UniGLTF.Editor.dll), GLTFast.Editor.GltfImporter (assembly: C:\Users\Alex\My project\Library\PackageCache\com.mtion.sdk@52eb6596fb5b\Plugins\ThirdParty\glTFast.Editor.dll)
UnityEditor.AssetImporters.ScriptedImporter:RegisterScriptedImporters ()
First, just try to reinstall your unity version.
Next maybe this is certainly a sharder bug, look if ur project is in URP (this assets doesn't support HDRP), if not convert shader like this guys
https://www.youtube.com/watch?v=FnYJaiSAJV8
or this one
https://www.youtube.com/watch?v=nB0r0c-SIVg
Hope its help