Unable to load the icon: 'Packages/com.unity.xr.arfoundation/Editor/Icons/ViewEnvironment.png'.
Note that either full project path should be used (with extension) or just the icon name if the icon is located in the following location: 'Assets/Editor Default Resources/Icons/' (without extension, since png is assumed)
UnityEditor.SceneView:OnEnable () (at /Users/bokken/build/output/unity/unity/Editor/Mono/SceneView/SceneView.cs:1353)