So... has support for the Spatial Analyst extension in ArcMap ended?
This morning, I tried to do a routine function using Zonal Statistics and I got this:

Any clue? I don't read whatever kanji that is so I have no idea what the error is referring to.
I've migrated over to ArcGIS Pro for a lot of tasks, but not Spatial Analyst. Do I need to do that? Or is this some other random error?
Thanks,
Esther