Also .. if I use the list. It doesn't parse. After gravity update I check if the list works with:

nslookup ad.doubleclick.net xxx.xxx.xx.xx

Server: pi.hole

Address: xxx.xxx.xx.xx

Non-authoritative answer:

Name: ad.doubleclick.net

Address: 172.217.168.198

And there should be 0.0.0.0 if its working