*Steps to reproduce:*
# Open *Outdoors* scene in attached project.
# Enable *RTVolume* in the hierarchy.
# Enter Play Mode.

*Actual results:* 
Following error is logged when entering play mode.
{noformat}
Compute shader (SkyLUTGenerator): Property (_ShadowmapCascadeAtlas) at kernel index (3) is not set
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)
{noformat}
*Expected results:* 

No error.

*Reproducible with versions:* 

6000.0.36f1, 6000.1.0b4, 6000.2.0a4

*Not reproducible with versions:* 2022.3.60f1

*Tested on (OS):* 

Windows

*Notes:*
* Does not reproduce on 2022.3.60f1,  only on 6,x streams
* The error only displays once, and doesn't seem to affect rendering, so maybe it is just some race condition when setting up a buffer/texture.
* The error occurs when trying to enter play mode with pathtracing and the PBR sky active. or if you switch to game view while PathTracer's convergence is ongoing.
* Does not repro when convergence is finished