Steps to repro:
1. Download the attached project "SponzaLWRP" and open "Sponza" scene on macOS;
2. Drag 'SponzaLightingDay' scene from the Project folder to the Hierarchy;
3. In the Hierarchy double-click on the SponzaLightingDay scene to make it the main scene;
4. In the Lighting window (Window>Rendering>Lighting) press Generate Lighting button;
5. Once "Baking..." is shown in the progress bar, wait for the progress bar to go beyond 20%;
6. In the Hierarchy select Directional Light gameobject and disable it.

Expected result:
No errors or warning are thrown.

Actual result:
Error:
"Assertion failed on expression: 'wroteTexelValidity'
and warning:
"Calling Deallocate on pointer, that can not be deallocated by allocator ALLOC_TEMP_MAIN"
are shown in the Console
See attached screenshot and Editor.log file.

Notes:
- Reproducible in 2022.1.0a10, 2021.2.0b13;
- Reproducible on macOS; Could not reproduce on Windows;
- The assertion in 'wroteTexelValidity' is pretty hard to repro and might be related to the project setup or previous bakes; The warning message "Calling Deallocate on pointer, that can not be deallocated by allocator ALLOC_TEMP_MAIN" is constantly reproducible.

- The issue might not reproduce consistently. If it doesn't, try following:
- Repeat initial repro steps again;
- Untoggle light at a different stages of the bake (10%, 20%, 40%, etc); it seems to be timing-related;
- Toggle/untoggle lights with different intervals after launching the bake.