Apache/HTTP/MPM/Event

Could not detect the PHP and Apache configuration 
because exec is disabled or apachectl is not working as expected.

Note

PHP can only be used with the MPM_PREFORK module
PHP-FPM can only be used with the MPM_EVENT module

# a2enmod mpm_event
Considering conflict mpm_worker for mpm_event:
Considering conflict mpm_prefork for mpm_event:
ERROR: Module mpm_prefork is enabled - cannot proceed due to conflicts. It needs to be disabled first!

mpm_event

# a2dismod mpm_event

Module mpm_event disabled. To activate the new configuration, you need to run:

 systemctl restart apache2

# a2enmod mpm_prefork
Considering conflict mpm_event for mpm_prefork:
Considering conflict mpm_worker for mpm_prefork:
Enabling module mpm_prefork.

To activate the new configuration, you need to run:

 systemctl restart apache2

#  a2enmod php7.2
# systemctl restart apache2