====== Fixed Error Reloading Apache2 Service - Could not reliably determine the server's fully qualified domain name using 127.0.1.1 ======

This error occurred after I configured the first virtual host, enabled the site1.conf file from /sites-available/ directory over to the /sites-enabled/ directory using the a2ensite command, and then I tried to reload Apache2 using 

<code>sudo systemctl reload apache2</code>

and received errors.  I tried to restart apache2 using 

<code>sudo systemctl1 restart apache2</code> 

and I received an error.  

I stopped the apache2 service, then tried to start apache2 using

<code>
sudo systemctl stop apache2

sudo systemctl start apache2
</code>

I received this error:  

<code>
"AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. Set the 'ServerName' directive globally to suppress this message."
</code>

When I checked the status of apache2 service I received a similar error.

<code>sudo systemctl status apache2</code>

===== Here is one likely fix for these errors =====

<code>
cd /etc/apache2/

sudo vim apache2.conf
</code>

At the very bottom of the conf file, insert 

<code>ServerName localhost</code>

Press Esc, Type :wq Enter in order to save and quit vim.

Now, restart Apache2

<code>sudo systemctl restart apache2</code>