"NullReferenceException" error is thrown on a new project when creating a new project after exiting a project with Light Batching Debugger window docked

Steps to reproduce:

1. Create a new Unity project using the Universal 2D template
2. Open the Light Batching Debugger window (Window > 2D > Light Batching Debugger)
3. Dock the Light Batching Debugger window
4. Close the Editor
5. Repeat step 1
6. Observe the Console window

Actual results: "NullReferenceException: Object reference not set to an instance of an object" error is thrown

Expected results: No errors or warnings are thrown

Reproducible with versions: 2022.3.66f1, 6000.0.57f1, 6000.1.16f1, 6000.2.3f1, 6000.3.0b1

Fixed in: 6000.2.4f1

Tested on (OS): macOS Silicon Sequoia 15.6.1