Web interface not working after upgrade

New to running pi-hole. running on an ubuntu 20.04 server. Just performed an upgrade and running into the following errors.

If the web port is not opening because of a port 80 conflict - then how can I change the web port. It use to answer on 8093 and would like to have pihole web answer on 8093.

Output below

  1. pihole upgrade completes
  2. systemd-analyze verify lighttpd.service has errors
  3. pihole DNS does not restart looks like a bridge interface has a port conflict - Looking into resolving that.
pihole -up
  [✓] Update local cache of available packages
  [i] Existing PHP installation detected : PHP version 7.4.3
  [✓] Checking for git
  [✓] Checking for iproute2
  [✓] Checking for whiptail
  [✓] Checking for ca-certificates

  [i] Checking for updates...
  [i] Pi-hole Core:	up to date
  [i] Web Interface:	up to date
  [i] FTL:		up to date

  [✓] Everything is up to date!

Let's look deeper

❯ lighttpd -t -f /etc/lighttpd/lighttpd.conf
Syntax OK
❯ sudo service lighttpd restart
❯ sudo systemctl status --full --no-pager lighttpd.service
● lighttpd.service - Lighttpd Daemon
     Loaded: loaded (/lib/systemd/system/lighttpd.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Wed 2022-03-02 02:40:26 UTC; 13s ago
    Process: 1444228 ExecStartPre=/usr/sbin/lighttpd -tt -f /etc/lighttpd/lighttpd.conf (code=exited, status=0/SUCCESS)
    Process: 1444235 ExecStart=/usr/sbin/lighttpd -D -f /etc/lighttpd/lighttpd.conf (code=exited, status=255/EXCEPTION)
   Main PID: 1444235 (code=exited, status=255/EXCEPTION)

Mar 02 02:40:26 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 5.
Mar 02 02:40:26 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 02:40:26 nuc.enabled.home systemd[1]: lighttpd.service: Start request repeated too quickly.
Mar 02 02:40:26 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 02:40:26 nuc.enabled.home systemd[1]: Failed to start Lighttpd Daemon.
❯ sudo systemd-analyze verify lighttpd.service

snap-core18-2253.mount: Unit is bound to inactive unit dev-loop0.device. Stopping, too.
snap-lxd-22526.mount: Unit is bound to inactive unit dev-loop2.device. Stopping, too.
snap-lxd-21835.mount: Unit is bound to inactive unit dev-loop5.device. Stopping, too.
snap-core20-1328.mount: Unit is bound to inactive unit dev-loop3.device. Stopping, too.
snap-core18-2284.mount: Unit is bound to inactive unit dev-loop1.device. Stopping, too.
❯ journalctl --no-pager --full -u lighttpd
-- Logs begin at Mon 2022-02-21 03:53:51 UTC, end at Wed 2022-03-02 03:03:53 UTC. --
Mar 02 01:07:39 nuc.enabled.home sudo[1383064]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:07:39 nuc.enabled.home sudo[1383064]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:07:39 nuc.enabled.home sudo[1383064]: pam_unix(sudo:session): session closed for user root
Mar 02 01:07:54 nuc.enabled.home sudo[1383112]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:07:54 nuc.enabled.home sudo[1383112]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:07:54 nuc.enabled.home sudo[1383112]: pam_unix(sudo:session): session closed for user root
Mar 02 01:07:57 nuc.enabled.home sudo[1383127]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:07:57 nuc.enabled.home sudo[1383127]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:07:57 nuc.enabled.home sudo[1383127]: pam_unix(sudo:session): session closed for user root
Mar 02 01:08:01 nuc.enabled.home sudo[1383160]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:08:01 nuc.enabled.home sudo[1383160]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:08:01 nuc.enabled.home sudo[1383160]: pam_unix(sudo:session): session closed for user root
Mar 02 01:08:06 nuc.enabled.home sudo[1383183]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:08:06 nuc.enabled.home sudo[1383183]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:08:06 nuc.enabled.home sudo[1383183]: pam_unix(sudo:session): session closed for user root
Mar 02 01:08:19 nuc.enabled.home sudo[1383224]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:08:19 nuc.enabled.home sudo[1383224]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:08:19 nuc.enabled.home sudo[1383224]: pam_unix(sudo:session): session closed for user root
Mar 02 01:08:41 nuc.enabled.home sudo[1383316]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:08:41 nuc.enabled.home sudo[1383316]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:08:41 nuc.enabled.home sudo[1383316]: pam_unix(sudo:session): session closed for user root
Mar 02 01:08:41 nuc.enabled.home sudo[1383327]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole -a -i local -web
Mar 02 01:08:41 nuc.enabled.home sudo[1383327]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:08:41 nuc.enabled.home sudo[1383327]: pam_unix(sudo:session): session closed for user root
Mar 02 01:08:41 nuc.enabled.home sudo[1383333]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole -a setdns 192.168.1.120\#1053,192.168.1.129\#1053 domain-needed bogus-priv no-dnssec
Mar 02 01:08:41 nuc.enabled.home sudo[1383333]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:08:43 nuc.enabled.home sudo[1383333]: pam_unix(sudo:session): session closed for user root
Mar 02 01:08:46 nuc.enabled.home sudo[1383421]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:08:46 nuc.enabled.home sudo[1383421]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:08:46 nuc.enabled.home sudo[1383421]: pam_unix(sudo:session): session closed for user root
Mar 02 01:09:13 nuc.enabled.home sudo[1383540]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:09:13 nuc.enabled.home sudo[1383540]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:09:13 nuc.enabled.home sudo[1383540]: pam_unix(sudo:session): session closed for user root
Mar 02 01:09:19 nuc.enabled.home sudo[1383551]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:09:19 nuc.enabled.home sudo[1383551]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:09:19 nuc.enabled.home sudo[1383551]: pam_unix(sudo:session): session closed for user root
Mar 02 01:09:49 nuc.enabled.home sudo[1383617]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:09:49 nuc.enabled.home sudo[1383617]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:09:49 nuc.enabled.home sudo[1383617]: pam_unix(sudo:session): session closed for user root
Mar 02 01:09:51 nuc.enabled.home sudo[1383626]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:09:51 nuc.enabled.home sudo[1383626]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:09:51 nuc.enabled.home sudo[1383626]: pam_unix(sudo:session): session closed for user root
Mar 02 01:09:56 nuc.enabled.home sudo[1383678]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole enable
Mar 02 01:09:56 nuc.enabled.home sudo[1383678]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:09:56 nuc.enabled.home sudo[1383678]: pam_unix(sudo:session): session closed for user root
Mar 02 01:10:07 nuc.enabled.home sudo[1384043]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:10:07 nuc.enabled.home sudo[1384043]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:10:07 nuc.enabled.home sudo[1384043]: pam_unix(sudo:session): session closed for user root
Mar 02 01:10:14 nuc.enabled.home sudo[1384058]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:10:14 nuc.enabled.home sudo[1384058]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:10:14 nuc.enabled.home sudo[1384058]: pam_unix(sudo:session): session closed for user root
Mar 02 01:10:59 nuc.enabled.home sudo[1384129]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:10:59 nuc.enabled.home sudo[1384129]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:10:59 nuc.enabled.home sudo[1384129]: pam_unix(sudo:session): session closed for user root
Mar 02 01:11:10 nuc.enabled.home sudo[1384153]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole enable
Mar 02 01:11:10 nuc.enabled.home sudo[1384153]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:11:10 nuc.enabled.home sudo[1384153]: pam_unix(sudo:session): session closed for user root
Mar 02 01:28:06 nuc.enabled.home sudo[1386652]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:28:06 nuc.enabled.home sudo[1386652]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:28:06 nuc.enabled.home sudo[1386652]: pam_unix(sudo:session): session closed for user root
Mar 02 01:28:09 nuc.enabled.home sudo[1386660]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:28:09 nuc.enabled.home sudo[1386660]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:28:09 nuc.enabled.home sudo[1386660]: pam_unix(sudo:session): session closed for user root
Mar 02 01:28:43 nuc.enabled.home sudo[1386728]: www-data : TTY=unknown ; PWD=/var/www/html/admin/scripts/pi-hole/php ; USER=root ; COMMAND=/usr/local/bin/pihole -a addcustomdns 192.168.1.211 icinga.enabled.home
Mar 02 01:28:43 nuc.enabled.home sudo[1386728]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:28:44 nuc.enabled.home sudo[1386728]: pam_unix(sudo:session): session closed for user root
Mar 02 01:28:52 nuc.enabled.home sudo[1386806]: www-data : TTY=unknown ; PWD=/var/www/html/admin/scripts/pi-hole/php ; USER=root ; COMMAND=/usr/local/bin/pihole -a addcustomdns 192.168.1.212 graphite.enabled.home
Mar 02 01:28:52 nuc.enabled.home sudo[1386806]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:28:52 nuc.enabled.home sudo[1386806]: pam_unix(sudo:session): session closed for user root
Mar 02 01:29:20 nuc.enabled.home sudo[1386891]: www-data : TTY=unknown ; PWD=/var/www/html/admin/scripts/pi-hole/php ; USER=root ; COMMAND=/usr/local/bin/pihole -a addcustomdns 192.168.1.114 pod.enabled.home
Mar 02 01:29:20 nuc.enabled.home sudo[1386891]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:29:20 nuc.enabled.home sudo[1386891]: pam_unix(sudo:session): session closed for user root
Mar 02 01:29:30 nuc.enabled.home sudo[1387014]: www-data : TTY=unknown ; PWD=/var/www/html/admin/scripts/pi-hole/php ; USER=root ; COMMAND=/usr/local/bin/pihole -a addcustomdns 192.168.1.120 nuc.enabled.home
Mar 02 01:29:30 nuc.enabled.home sudo[1387014]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:29:30 nuc.enabled.home sudo[1387014]: pam_unix(sudo:session): session closed for user root
Mar 02 01:29:35 nuc.enabled.home sudo[1387067]: www-data : TTY=unknown ; PWD=/var/www/html/admin/scripts/pi-hole/php ; USER=root ; COMMAND=/usr/local/bin/pihole -a addcustomdns 192.168.1.129 nuc2.enabled.home
Mar 02 01:29:35 nuc.enabled.home sudo[1387067]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:29:35 nuc.enabled.home sudo[1387067]: pam_unix(sudo:session): session closed for user root
Mar 02 01:29:41 nuc.enabled.home sudo[1387123]: www-data : TTY=unknown ; PWD=/var/www/html/admin/scripts/pi-hole/php ; USER=root ; COMMAND=/usr/local/bin/pihole -a addcustomdns 192.168.1.120 ns1.enabled.home
Mar 02 01:29:41 nuc.enabled.home sudo[1387123]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:29:41 nuc.enabled.home sudo[1387123]: pam_unix(sudo:session): session closed for user root
Mar 02 01:29:45 nuc.enabled.home sudo[1387188]: www-data : TTY=unknown ; PWD=/var/www/html/admin/scripts/pi-hole/php ; USER=root ; COMMAND=/usr/local/bin/pihole -a addcustomdns 192.168.1.129 ns2.enabled.home
Mar 02 01:29:45 nuc.enabled.home sudo[1387188]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:29:45 nuc.enabled.home sudo[1387188]: pam_unix(sudo:session): session closed for user root
Mar 02 01:30:05 nuc.enabled.home sudo[1387829]: www-data : TTY=unknown ; PWD=/var/www/html/admin/scripts/pi-hole/php ; USER=root ; COMMAND=/usr/local/bin/pihole -a addcustomdns 192.168.122.203 leaf01.enabled.home
Mar 02 01:30:05 nuc.enabled.home sudo[1387829]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:30:05 nuc.enabled.home sudo[1387829]: pam_unix(sudo:session): session closed for user root
Mar 02 01:31:59 nuc.enabled.home sudo[1388293]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole enable
Mar 02 01:31:59 nuc.enabled.home sudo[1388293]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:31:59 nuc.enabled.home sudo[1388293]: pam_unix(sudo:session): session closed for user root
Mar 02 01:32:02 nuc.enabled.home sudo[1388303]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:32:02 nuc.enabled.home sudo[1388303]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:32:02 nuc.enabled.home sudo[1388303]: pam_unix(sudo:session): session closed for user root
Mar 02 01:32:06 nuc.enabled.home sudo[1388318]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:32:06 nuc.enabled.home sudo[1388318]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:32:06 nuc.enabled.home sudo[1388318]: pam_unix(sudo:session): session closed for user root
Mar 02 01:32:26 nuc.enabled.home sudo[1388326]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole enable
Mar 02 01:32:26 nuc.enabled.home sudo[1388326]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:32:26 nuc.enabled.home sudo[1388326]: pam_unix(sudo:session): session closed for user root
Mar 02 01:32:27 nuc.enabled.home sudo[1388335]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:32:27 nuc.enabled.home sudo[1388335]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:32:27 nuc.enabled.home sudo[1388335]: pam_unix(sudo:session): session closed for user root
Mar 02 01:32:30 nuc.enabled.home sudo[1388384]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole enable
Mar 02 01:32:30 nuc.enabled.home sudo[1388384]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:32:30 nuc.enabled.home sudo[1388384]: pam_unix(sudo:session): session closed for user root
Mar 02 01:32:32 nuc.enabled.home sudo[1388396]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:32:32 nuc.enabled.home sudo[1388396]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:32:32 nuc.enabled.home sudo[1388396]: pam_unix(sudo:session): session closed for user root
Mar 02 01:32:34 nuc.enabled.home sudo[1388400]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole enable
Mar 02 01:32:34 nuc.enabled.home sudo[1388400]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:32:34 nuc.enabled.home sudo[1388400]: pam_unix(sudo:session): session closed for user root
Mar 02 01:32:37 nuc.enabled.home sudo[1388409]: www-data : TTY=unknown ; PWD=/var/www/html/admin ; USER=root ; COMMAND=/usr/local/bin/pihole status web
Mar 02 01:32:37 nuc.enabled.home sudo[1388409]: pam_unix(sudo:session): session opened for user root by (uid=0)
Mar 02 01:32:37 nuc.enabled.home sudo[1388409]: pam_unix(sudo:session): session closed for user root
Mar 02 01:34:05 nuc.enabled.home systemd[1]: Stopping Lighttpd Daemon...
Mar 02 01:34:05 nuc.enabled.home systemd[1]: lighttpd.service: Succeeded.
Mar 02 01:34:05 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 01:34:05 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 01:34:05 nuc.enabled.home lighttpd[1390703]: 2022-03-02 01:34:05: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 01:34:05 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 01:34:05 nuc.enabled.home lighttpd[1390710]: 2022-03-02 01:34:05: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 01:34:05 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 01:34:05 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 01:34:06 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 1.
Mar 02 01:34:06 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 2.
Mar 02 01:34:06 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 01:34:06 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 01:34:06 nuc.enabled.home lighttpd[1390853]: 2022-03-02 01:34:06: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 01:34:06 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 01:34:06 nuc.enabled.home lighttpd[1390915]: 2022-03-02 01:34:06: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 01:34:06 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 01:34:06 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 01:34:06 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 3.
Mar 02 01:34:06 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 01:34:06 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 01:34:06 nuc.enabled.home lighttpd[1391050]: 2022-03-02 01:34:06: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 01:34:06 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 01:34:06 nuc.enabled.home lighttpd[1391061]: 2022-03-02 01:34:06: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 01:34:06 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 01:34:06 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 4.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 01:34:07 nuc.enabled.home lighttpd[1391111]: 2022-03-02 01:34:07: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 01:34:07 nuc.enabled.home lighttpd[1391118]: 2022-03-02 01:34:07: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 5.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 01:34:07 nuc.enabled.home lighttpd[1391156]: 2022-03-02 01:34:07: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 01:34:07 nuc.enabled.home lighttpd[1391163]: 2022-03-02 01:34:07: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 6.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 01:34:07 nuc.enabled.home lighttpd[1391171]: 2022-03-02 01:34:07: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 01:34:07 nuc.enabled.home lighttpd[1391178]: 2022-03-02 01:34:07: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 7.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 01:34:07 nuc.enabled.home lighttpd[1391186]: 2022-03-02 01:34:07: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 01:34:07 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 01:34:07 nuc.enabled.home lighttpd[1391193]: 2022-03-02 01:34:07: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 01:34:07 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 01:34:08 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 8.
Mar 02 01:34:08 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 01:34:08 nuc.enabled.home systemd[1]: lighttpd.service: Start request repeated too quickly.
Mar 02 01:34:08 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 01:34:08 nuc.enabled.home systemd[1]: Failed to start Lighttpd Daemon.
Mar 02 02:40:24 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 02:40:24 nuc.enabled.home lighttpd[1444150]: 2022-03-02 02:40:24: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 02:40:24 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 02:40:24 nuc.enabled.home lighttpd[1444170]: 2022-03-02 02:40:24: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 02:40:24 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 02:40:24 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 1.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 02:40:25 nuc.enabled.home lighttpd[1444179]: 2022-03-02 02:40:25: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 02:40:25 nuc.enabled.home lighttpd[1444186]: 2022-03-02 02:40:25: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 2.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 02:40:25 nuc.enabled.home lighttpd[1444197]: 2022-03-02 02:40:25: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 02:40:25 nuc.enabled.home lighttpd[1444204]: 2022-03-02 02:40:25: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 3.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 02:40:25 nuc.enabled.home lighttpd[1444212]: 2022-03-02 02:40:25: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 02:40:25 nuc.enabled.home lighttpd[1444219]: 2022-03-02 02:40:25: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 4.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Starting Lighttpd Daemon...
Mar 02 02:40:25 nuc.enabled.home lighttpd[1444228]: 2022-03-02 02:40:25: (server.c.1517) WARNING: unknown config-key: alias.url (ignored)
Mar 02 02:40:25 nuc.enabled.home systemd[1]: Started Lighttpd Daemon.
Mar 02 02:40:25 nuc.enabled.home lighttpd[1444235]: 2022-03-02 02:40:25: (network.c.311) can't bind to socket: 0.0.0.0:80 Address already in use
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Mar 02 02:40:25 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 02:40:26 nuc.enabled.home systemd[1]: lighttpd.service: Scheduled restart job, restart counter is at 5.
Mar 02 02:40:26 nuc.enabled.home systemd[1]: Stopped Lighttpd Daemon.
Mar 02 02:40:26 nuc.enabled.home systemd[1]: lighttpd.service: Start request repeated too quickly.
Mar 02 02:40:26 nuc.enabled.home systemd[1]: lighttpd.service: Failed with result 'exit-code'.
Mar 02 02:40:26 nuc.enabled.home systemd[1]: Failed to start Lighttpd Daemon.
❯ pihole restartdns
  [✓] Restarting DNS server
❯ pihole status
  [✗] DNS service is NOT running

I am looking into the problem here

[2022-03-02 02:59:59.766 1447896M] FATAL ERROR in dnsmasq core: failed to create listening socket for 192.168.70.1: Address already in use
[2022-03-02 02:59:59.770 1447896M] ########## FTL terminated after 83ms  (code 1)! ##########

A permanent method of changing the lighttpd port (for lighttpd version 1.4.46 or later):

Check your lighttpd version with this command.

lighttpd -v

If that returns 1.4.46 or above, you can overwrite the port from Pi-hole's lighttpd.conf in your external.conf like this:

server.port := 8888

Note that the := operator isn't supported in older versions of lighttpd .