Routing is not working laravel 5?

I have just installed fresh laravel 5.1, only root page is showing that

Route::get('/', function () {

    return view('welcome');
});

It's working perfectly but rather than any other route not working like:

Route::get('user', function () {
   return "hello";
});

It throws exception 404 not found. Please help me to get out from this. Thanks in advance.

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