While running a game with this mod, the following error occurred: The mod Better Air Filtering (0.3.6) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event better-air-filtering::on_robot_mined_entity (ID 66)
better-air-filtering/control.lua:373: attempt to index field '?' (a nil value)
stack traceback:
better-air-filtering/control.lua:373: in function 'removeFromMap'
better-air-filtering/control.lua:441: in function 'removeFilter'
better-air-filtering/control.lua:487: in function <better-air-filtering/control.lua:482>

My guess is either the mod did not like the air filtering 2 machines that replaced their ghosts in the south or the ones in the north that had no pollution suddenly did.

Here's an error when I try to remove an air filtering machine tier 2 by hand that had no pollution or filters in it: The mod Better Air Filtering (0.3.6) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event better-air-filtering::on_player_mined_entity (ID 67)
better-air-filtering/control.lua:373: attempt to index field '?' (a nil value)
stack traceback:
better-air-filtering/control.lua:373: in function 'removeFromMap'
better-air-filtering/control.lua:441: in function 'removeFilter'
better-air-filtering/control.lua:487: in function <better-air-filtering/control.lua:482>