pi@piserver:~ $ sudo apt-get update
Hit:1 http://archive.raspberrypi.org/debian buster InRelease
Get:2 http://raspbian.raspberrypi.org/raspbian buster InRelease [15.0 kB]
Hit:3 http://packages.openmediavault.org/public usul InRelease
Fetched 15.0 kB in 2s (9,089 B/s)
Reading package lists... Done
pi@piserver:~ $ sudo dpkg --configure -a
dpkg: dependency problems prevent configuration of php-xml:
 php-xml depends on php7.3-xml; however:
  Package php7.3-xml is not installed.

dpkg: error processing package php-xml (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of php-pam:
 php-pam depends on phpapi-20180731; however:
  Package phpapi-20180731 is not installed.

dpkg: error processing package php-pam (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of php-fpm:
 php-fpm depends on php7.3-fpm; however:
  Package php7.3-fpm is not installed.

dpkg: error processing package php-fpm (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of php-cgi:
 php-cgi depends on php7.3-cgi; however:
  Package php7.3-cgi is not installed.

dpkg: error processing package php-cgi (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 php-xml
 php-pam
 php-fpm
 php-cgi
pi@piserver:~ $ ^C
pi@piserver:~ $ sudo apt install software-properties-common
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 php-cgi : Depends: php7.3-cgi but it is not going to be installed
 php-fpm : Depends: php7.3-fpm but it is not going to be installed
 php-pam : Depends: phpapi-20180731
 php-xml : Depends: php7.3-xml but it is not going to be installed
 software-properties-common : Depends: gir1.2-glib-2.0 but it is not going to be installed
                              Depends: gir1.2-packagekitglib-1.0 (>= 1.1.0-2) but it is not going to be installed
                              Depends: python3-dbus but it is not going to be installed
                              Depends: python3-gi but it is not going to be installed
                              Depends: python3-software-properties (= 0.96.20.2-2) but it is not going to be installed
                              Recommends: packagekit but it is not going to be installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
pi@piserver:~ $ sudo add-apt-repository ppa:ondrej/php
sudo: add-apt-repository: command not found
pi@piserver:~ $ sudo apt -y install software-properties-common dirmngr apt-transport-https lsb-release ca-certificates
Reading package lists... Done
Building dependency tree
Reading state information... Done
ca-certificates is already the newest version (20200601~deb10u1).
dirmngr is already the newest version (2.2.12-1+rpi1+deb10u1).
lsb-release is already the newest version (10.2019051400+rpi1).
lsb-release set to manually installed.
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 php-cgi : Depends: php7.3-cgi but it is not going to be installed
 php-fpm : Depends: php7.3-fpm but it is not going to be installed
 php-pam : Depends: phpapi-20180731
 php-xml : Depends: php7.3-xml but it is not going to be installed
 software-properties-common : Depends: gir1.2-glib-2.0 but it is not going to be installed
                              Depends: gir1.2-packagekitglib-1.0 (>= 1.1.0-2) but it is not going to be installed
                              Depends: python3-dbus but it is not going to be installed
                              Depends: python3-gi but it is not going to be installed
                              Depends: python3-software-properties (= 0.96.20.2-2) but it is not going to be installed
                              Recommends: packagekit but it is not going to be installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).