[19:11:51] Runtime in code/ZAS/_gas_mixture.dm,135: Division by zero
proc name: molar ratio (/datum/gas_mixture/proc/molar_ratio)
src: /datum/gas_mixture (/datum/gas_mixture)
call stack:
/datum/gas_mixture (/datum/gas_mixture): molar ratio("oxygen")
the effect (/obj/effect/fire): process()
Air (/datum/subsystem/air): process part(4)
Air (/datum/subsystem/air): fire(1)
Air (/datum/subsystem/air): ignite(1)
Master (/datum/controller/master): RunQueue()
Master (/datum/controller/master): Loop()
Master (/datum/controller/master): StartProcessing()
[runtime]