Help with adding blocklists

I'm trying to ad blocklists to my pihole and most forums ive looked at have said to add the blocklist to adlists.list then run

pihole -g

so i added a adlists.list file in the correct location with nano and run pihole -g and the new lists dont show up

I'm running pihole on ubuntu 20.04

This list is not used any longer since v5.0 but instead the database gravity.db is.
https://pi-hole.net/2020/05/10/pi-hole-v5-0-is-here/

You can add adlists by adding them via web interface, pihole -a adlist add URL comment or via direct sql injection.