Guys with python 3.7 I fixed the old tornado to still operate. But we are currently in the process of integrating the python 3.8 and it is not feasible to do this excersize again. I will really need you to patch salt and use newer tornado (be it 5 or 6) for us to be able to proceed with python 3.8 integration into system. It extended your time to migrate for 11 months so I hope this time you are ready.