Currently going through some packet tracers on my MacBook Pro 2020 which has the M1 chip, when I'm halfway through the packet tracers some of the commands don't appear to work. for example on packet tracer 16.4.6 commands such as 'exec-timeout 6' and 'SSH -1 username target' don't appear to work. I don't know if its something to do with my laptop because I have had trouble running python as well on my Mac as it isn't integrated with a PDK license. or will I just need to download the older version of packet tracer for the packet tracers to work