Ionic serve - l is not working?

Hello friends !
In my laptop , when i type ionic serve -l command, the browser page won’t open,
Due to this issue i could not develop my app.
Please help me people,

What happens when you run that command?

If you get something like this…

…just manually open the page in your browser: http://localhost:8100/ionic-lab

If running the command yields some other result/message, please share.