Can't configure LAMP

Hi everyone! My teacher told me to install lamp for my code course at college. Well, it worked using the package available in the aur but somehow I can’t configure it. I found the tutorial in this forum, but I’m stuck and have no Idea how to move forward.

These are the commands I run:

sudo pacman -Syyu
sudo pacman -S apache
sudo nano /etc/httpd/conf/httpd.conf
sudo systemctl enable httpd

And all of them seemed to work well, bu I got this message when I run
sudo systemctl status httpd

× httpd.service - Apache Web Server
     Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; preset: disabled)
     Active: failed (Result: exit-code) since Fri 2022-09-16 00:28:02 -05; 3s ago
   Duration: 64ms
    Process: 82463 ExecStart=/usr/bin/httpd -k start -DFOREGROUND (code=exited, status=1/FAILURE)
   Main PID: 82463 (code=exited, status=1/FAILURE)
        CPU: 21ms

set 16 00:28:02 snakepit systemd[1]: Started Apache Web Server.
set 16 00:28:02 snakepit httpd[82463]: AH00534: httpd: Configuration error: More than one MPM loaded.
set 16 00:28:02 snakepit systemd[1]: httpd.service: Main process exited, code=exited, status=1/FAILURE
set 16 00:28:02 snakepit systemd[1]: httpd.service: Failed with result 'exit-code'.

I hope anybody has an idea on how to fix this. Thanks!

Since you made changes to httpd.conf , make sure you use only one Multi-Processing Module. Apache supports 3 (prefork, worker or event), choose only one.
If you want to use php, choose prefork.

See
https://wiki.archlinux.org/title/Apache_HTTP_Server#PHP

and

LAMP is an acronym for

Linux Apache Mysql Php

Arch based distributions use Mariadb instead of mysql.

So your teacher tells you to create a webserver deployment using the mentoioned components.

So your assignments going forward will likely require you to have a functional setup.

Given the nature of Manjaro you will likely want to use a virtual machine to create a similiar environment.

If your teacher/tutor is like the most they will be referring to an Ubuntu setup.

You can create such setup in a virtual machine using virtualbox and a server version of the Ubuntu distribution.