Update Gravity - Issue

You have no adlists shown. Use this FAQ to restore the default lists and rebuild gravity. If this produces errors please reply with the output and a new debug token.

Edit: also check your firewalld settings against our documentation:

Your debug log shows the following:

*** [ DIAGNOSING ]: FirewallD
[i] Firewalld service active
[✗]   Allow Service: http (https://docs.pi-hole.net/main/prerequisites/#firewalld)
[✗]   Allow Service: dns (https://docs.pi-hole.net/main/prerequisites/#firewalld)
[✓]   Allow Service: dhcp
[✓]   Allow Service: dhcpv6
[✗] FTL Custom Zone Not Detected (https://docs.pi-hole.net/main/prerequisites/#firewalld)