You updated host settings?

First reboot server to Apple settings

sudp restart_server

1. When I executed $sudo restart_server, an error is popped up "restart_server" is not found
2. As advised here, https://stackoverflow.com/questions/52197246/wsl-redis-encountered-system-has-not-been-booted-with-systemd-as-init-system-pi
   I did $ sudo service postgresql start and $ sudo service redis-server start
   both the commands executed successfully but while running $GVM-SETUP, error is same "System has not been booted wiht systemd as init system (PID 1). Can't operate. Failed to connect to bus: Host is down"

Can't we run GVM in WSL Kali Linux?

It's a known issue, apparently running GVM without systemd doesn't work. We are trying to find a workaround.

This report has been filed against an old version of Kali. We will be closing this ticket due to inactivity.

Please could you see if you are able to replicate this issue with the latest version of Kali Linux (https://www.kali.org/get-kali/)?

If you are still facing the same problem, feel free to re-open the ticket. If you choose to do this, could you provide more information to the issue you are facing, and also give information about your setup?
For more information, please read: https://www.kali.org/docs/community/submitting-issues-kali-bug-tracker/