Hosts + local.list of PIHOLE?

Networking
[✓] IPv4 address(es) bound to the enp4s0 interface:
192.168.178.21/24 matches the IP found in /etc/pihole/setupVars.conf
169.254.56.37/16 does not match the IP found in /etc/pihole/setupVars.conf (Use IPv6 ULA addresses for Pi-hole)

[✗] No IPv6 address(es) found on the enp4s0 interface.

[i] Default IPv4 gateway: 192.168.178.1

  • Pinging 192.168.178.1...
    [✓] Gateway responded.

[4711] is in use by pihole-FTL
[5333] is in use by pihole-FT
[53] is in use by dnsmasq
[9050] is in use by tor
[9665] is in use by java
[9666] is in use by java
[513] is in use by dnscrypt-
[513] is in use by systemd
[5333] is in use by pihole-FT

*** [ DIAGNOSING ]: Name resolution (IPv4) using a random blocked domain and a known ad-serving domain
dig: '' is not a legal name (unexpected end of input)
[✗] Failed to resolve via localhost (127.0.0.1)
dig: '' is not a legal name (unexpected end of input)
[✗] Failed to resolve via Pi-hole (192.168.178.21)
[✓] doubleclick.com is 172.217.16.78 via a remote, public DNS server (8.8.8.8)

WHY???
[✗] Failed to resolve via localhost (127.0.0.1)
[✗] Failed to resolve via Pi-hole (192.168.178.21)

I don't know anymore...