How to reproduce:
1. Open the user's attached project "IN_21874"
2. In Assets press -> "Prefabs" -> "Network" -> "Player" prefab
3. Observe the Console
Expected result: no errors
Actual result: errors
Reproducible with: 2022.1.23f1, 2022.2.0b15, 2023.1.0a19
Couldn't test with: 2020.3.42f1, 2021.3.14f1 (due to compiler errors when downgrading)
Reproducible on: Windows 10 Pro
Full error: [Worker0] MissingComponentException: There is no 'CanvasRenderer' attached to the "healthMask" game object, but a script is trying to access it.
You probably need to add a CanvasRenderer to the game object "healthMask". Or your script needs to check if the component is attached before using it.
UnityEngine.UI.Mask.OnDisable () (at Library/PackageCache/com.unity.ugui@1.0.0/Runtime/UI/Core/Mask.cs:99)
UnityEditor.AssetPreviewUpdater:CreatePreviewForAsset(Object, Object[], String)
Note: “CanvasRenderer” is attached to a “healthMask” GameObject