The requested URL /laravel-filemanager was not found on this server in UniSharp/laravel-filemanager

I am using UniSharp/laravel-filemanager and I've done all steps to install it , but when I want to use it i face this error :

I am using laravel 5.1 on wamp server

Not Found

The requested URL /laravel-filemanager was not found on this server.

Apache/2.4.9 (Win64) PHP/5.5.12 Server at localhost Port 80

via Chebli Mohamed