Starting point machine

At first I was getting a 404 error, then I changed the location of my shell.ps1 to my user folder in kali and now I’m getting the above error ^. No idea why it’s happening, my python server is showing the GET requests 10.10.10.27 - - [27/Jun/2020 00:15:26] “GET /shell.ps1 HTTP/1.1” 200 -

I notice in netcat the GET requests source IP is there but there’s an ‘unknown’ modifier associated with it? perhaps this is a clue

connect to [10.10.14.(myip)] from (UNKNOWN) [10.10.10.27] 49704

based on “You cannot call a method on a null-valued expression.” I’m assuming the $client object to be undefined, but shouldn’t this be an issue with the startup box itself? the box’s request to my machine returns a 200 http code so it shouldn’t be an issue with my firewall…