When pressing the "," again key to get out of satellite view the save crashes with this error (the save is heavily modded):

The mod All Seeing Satellite (0.7.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event all-seeing-satellite::all-seeing-satellite-toggle-satellite-mode (ID 221)
LuaEntity API call when LuaEntity was invalid.
stack traceback:
[C]: in function 'set_controller'
...l-seeing-satellite__/scripts/services/player-service.lua:59: in function 'toggle_satellite_mode'
...ng-satellite__/scripts/controllers/player-controller.lua:81: in function 'func'
TheEckelmonster-core-library/scripts/event-handler.lua:73: in function 'process_event'
TheEckelmonster-core-library/scripts/event-handler.lua:90: in function <TheEckelmonster-core-library/scripts/event-handler.lua:84>

Hello! Apologies for the error, but thanks for the report.

Is the error consistent (i.e. reproducible), or seemingly intermittent?

As well, where was your character physically located at the time you entered Satellite Mode? Were they potentially in a vehicle, or some state where there was no physical "character" entity present at the time?

Additional context as to what you were doing leading up to this error would be greatly appreciated.

Lastly, if you don't mind, if you would try running the command /all_seeing.print_player_data while in game, and share the contents of the file it creates, that would help quite a bit in at least understanding the state of the player/character object just prior to the error occurring.

Will look into the issue in the meantime and hope to have a fix out as soon as I can narrow down the root cause.