piratebox-armbian lighttpd error

Due to the nature of my project i.e. wanting to use Raspbian beyond piratebox functionality, I installed piratebox on top of NOOBS as is in the following official tutorial:
[piratebox.cc]

I followed all the steps given. When i try to execute the command sudo /etc/init.d/piratebox start, the functionality refuses to work properly. All packages aparrt frm lighttpd work efficiently, but i receive the error log:

| Setting up lighttpd (1.4.25-2) ...
| Starting web server: lighttpd2010-01-10 00:57:30: (network.c.345) can't bind to port: :: 80 Address already in use
| failed!

I do not have any other web server installed, nor is any other
program listening on port 80.

| $ netstat -a | awk '($1 != "unix") && ($6 == "LISTEN")'
| tcp 0 0 *:ssh *:* LISTEN
| tcp 0 0 localhost:smtp *:* LISTEN
| tcp6 0 0 [::]:ssh [::]:* LISTEN

I am using the Raspberry Pi headles using SSH and a VNC server by connecting it to my Windows 10 laptop via an ethernet cable.

I cannot figure out what the problem is. Need help