Why won't my laravel development server start

I have installed laravel using composer but my development serve won’t start serving. What could be the issue?

>Solution :

seems to be working, check on your browser

http://127.0.0.1:8000

if it still doesn’t work, serve it on the 0.0.0.0 IP number

also check port is open or not

example custom host and port

 php artisan serve --host=0.0.0.0 --port=1233

if not working still ,likely port not accessable