build error: HideFlags.DontSave with asset named PreMatLight0

Questions & Answers
1

hi

i getting build error on one of scenes that says:

An asset is marked with HideFlags.DontSave but is included in the build:
Asset: ‘Library/unity editor resources’
Asset name: PreMatLight0
(You are probably referencing internal Unity data in your build.)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

searched on the internet looks like no one asked before about this and i looked over all images on that specific scene and no item named PreMatLight0 attached to them

this error only occur when that specific scene is on build list and ticked if i build game without that scene everything is fine

searched on the internet and found out its a built-in image of the editor but im just using default ui-mask and background from built-in images which should be fine

target is android with unity 2019.2.17f1

2

so i find out what was problem and hope this helps someone

this problem caused by type mismatch material on one of image components i didn’t attached it but somehow it showed the material error

for debug you can build every scene separate to find which scene cause this error and then try to find this ui thing by removing step by step