UnassignedReferenceException: The variable object3 of ObjectAppearDelay has not been assigned.
You probably need to assign the object3 variable of the ObjectAppearDelay script in the inspector.
ObjectAppearDelay+<DisableTutorial>d__6.MoveNext () (at Assets/Scripts/ObjectAppearDelay.cs:35)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at <c5ed782439084ef1bc2ad85eec89e9fe>:0)