Error occurs with multiple factions of rampant biters. Seems to error out right as the biter is killed by the fence.
Error while running event laserfence::on_script_trigger_effect (ID 169)
laserfence/control.lua:172: attempt to index local 'entityOrPlayer' (a nil value)
stack traceback:
laserfence/control.lua:172: in function 'safeDamage'
laserfence/control.lua:166: in function <laserfence/control.lua:158>
