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>
possible caused by placing with Nanobots