Change port 8080

is it possible (and if yes, where?) to change the default lightmeter port from 8080 to something else like for example 8181?

Thank you

I found the way:
I am using ubuntu server and as per instruction on how to install Lightmeter on Ubuntu
( )
I have changed the systemd service in a file ‘/etc/systemd/system/lightmeter.service’ so that the line:
ExecStart=sudo -u lightmeter /usr/local/bin/lightmeter -watch_dir /var/log/
is now:
ExecStart=sudo -u lightmeter /usr/local/bin/lightmeter -listen ':8181' -watch_dir /var/log/

And of course the config file for the apache server must be changed to the same port.
And it is working.