XAMPP: Another web server is already running
<p>I get the following error after installing gitlab..</p>

<pre><code>root@Blase:~# sudo /opt/lampp/lampp start
Starting XAMPP for Linux 7.0.9-1...
XAMPP: Starting Apache...fail.
[XAMPP:  Another web server is already running.][1]
XAMPP: Starting MySQL...already running.
</code></pre>

<p>I cannot access my localhost/phpmyadmin or any projects folder as am redirected to Gitlab.</p>

<p>I tried to view which program is using port 80 by running:
<code>"netstat -tulpn | grep --color :80"</code> and i got the output shown in attached image.
Any help guys?
<a href="https://i.stack.imgur.com/X3IJG.png" rel="noreferrer"><img src="https://i.stack.imgur.com/X3IJG.png" alt="enter image description here"></a></p>