How to reproduce:

1. Create a URP 3D sample Project
2. Add an Adaptive Probe Volume to the Scene
3. Add a Probe Adjustment Volume to the Scene
4. Enable Adaptive Probe Volumes in the RP Asset (Light Probe System - Adaptive Probe Volumes)
5. Navigate to Window > Rendering > Lighting > Adaptive Probe Volumes and Generate Lighting
6. Select the Probe Adjustment Volume in the Hierarchy
7. In the Probe Adjustment Volume Component click "Bake Probe Volumes"
8. Right after step 7, before the Baking is complete, click "Preview Probe Adjustment"

Actual result:

"NullReferenceException: Object reference not set to an instance of an object
at UnityEngine.Rendering.AdaptiveProbeVolumes.FinalizeCell
at UnityEngine.Rendering.AdaptiveProbeVolumes.BakeDelegate
at UnityEngine.Rendering.AdaptiveProbeVolumes.AsyncBakeCallback" Error floods the Console, Baking operation hangs until Baking is cancelled

Expected result: Either Previewing Adjustments is disabled while Baking or Baking works

Reproducible with: 6000.0.2f1

Couldn't test with: 2021.3.38f1, 2022.3.28f1, 2023.1.20f1, 2023.20f1 (No Probe Adjustment Volumes)

Reproduced on: Windows 11, macOS Sonoma M1