How to reproduce:
1. Create a new VR project
2. Close VR Project Template window
3. Observe Console

Expected result: Window is closed without any errors.
Actual result: Null Reference Exception is thrown:

NullReferenceException: Object reference not set to an instance of an object
Unity.InteractiveTutorials.TutorialModalWindow.UpdateContent () (at Library/PackageCache/com.unity.learn.iet-framework@1.2.3/Editor/Editor Windows/TutorialModalWindow.cs:116)
Unity.InteractiveTutorials.TutorialModalWindow.OnBecameVisible () (at Library/PackageCache/com.unity.learn.iet-framework@1.2.3/Editor/Editor Windows/TutorialModalWindow.cs:91)
UnityEditor.HostView.RegisterSelectedPane (System.Boolean sendEvents) (at <bbfbd5a71eea45d1a1354233c800516b>:0)
UnityEditor.HostView.OnEnable () (at <bbfbd5a71eea45d1a1354233c800516b>:0)

Reproduced with: 2020.3.24f1, 2020.3.23f1.
Didn't reproduce with: 2022.1.0a16, 2021.2.4f1, 2020.3.22f1, 2019.4.33f1.