Did not get fixed.
I did install apache with dietpi-software
here is what I did:
root@DietPi:~# sudo apt install libapache2-mod-php7.3
Reading package lists… Done
Building dependency tree
Reading state information… Done
libapache2-mod-php7.3 is already the newest version (7.3.11-1~deb10u1).
0 upgraded, 0 newly installed, 0 to remove and 13 not upgraded.
root@DietPi:~# sudo apt purge php7.3-fpm
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following packages will be REMOVED:
php7.3-fpm*
0 upgraded, 0 newly installed, 1 to remove and 13 not upgraded.
After this operation, 3,458 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database … 86014 files and directories currently installed.)
Removing php7.3-fpm (7.3.11-1~deb10u1) …
apache2_invoke php7.3-fpm prerm: No action required
(Reading database … 85999 files and directories currently installed.)
Purging configuration files for php7.3-fpm (7.3.11-1~deb10u1) …
apache2_invoke php7.3-fpm postrm: No action required
dpkg: warning: while removing php7.3-fpm, directory ‘/etc/php/7.3/fpm/conf.d’ not empty so not removed
Processing triggers for systemd (241-7~deb10u2+rpi1) …
root@DietPi:~# sudo a2enmod mpm_prefork php7.3
Considering conflict mpm_event for mpm_prefork:
ERROR: Module mpm_event is enabled - cannot proceed due to conflicts. It needs to be disabled first!
Considering conflict mpm_worker for mpm_prefork:
ERROR: Module php7.3 does not exist!
root@DietPi:~# systemctl restart apache2
root@DietPi:~#