"NullReferenceException: Object reference not set to an instance of an object" error is thrown when UpdateVolumeStack function is called

How to reproduce:
1. Open the “Bugs” project
2. Open the “Test“ scene
3. Enter Play Mode
4. Observe the Console

Expected result: No errors are displayed
Actual result: “NullReferenceException” is displayed

Reproducible in: 2023.2.0a9, 6000.0.32f1, 6000.1.0a8
Not reproducible in: 2021.3.47f1, 2022.3.54f1, 2023.2.0a8

Reproduced on: Windows 10
Not reproduced on: No other environments tested