The command : $url = "http://192.168.4.172:7655"; $token = "xxxx"; iwr -useb "$url/install-host-agent.ps1" | iex

Give me this error

when i run : $env:PULSE_URL="http://192.168.4.172:7655"; $env:PULSE_TOKEN="xxxxxxx"; irm http://192.168.4.172:7655/install-host-agent.ps1 | iex