How to reproduce:
# Create a URP 3D sample Project
# Add an Adaptive Probe Volume to the Scene
# Add a Probe Adjustment Volume to the Scene
# Enable Adaptive Probe Volumes in the RP Asset (Light Probe System - Adaptive Probe Volumes)
# Navigate to Window > Rendering > Lighting > Adaptive Probe Volumes and Generate Lighting
# Select the Probe Adjustment Volume in the Hierarchy
# In the Probe Adjustment Volume Component click "Bake Probe Volumes"
# 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