Laravel: Error displaying localhost:8000 on browser

Good day, when I try to start laravel artisan on a command-line using 'php artisan serve', it works because I get the "Laravel development server started on http://localhost:8000/". However, when I try to run 'localhost:8000' on my web browser, I get this error:

"Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0

Fatal error: Unknown: Failed opening required 'C:\xampp\htdocs\laravel\laravel/server.php' (include_path='.;C:\xampp\php\PEAR') in Unknown on line 0"

Please I need your help.

via Chebli Mohamed