Laravel 5 - Route must start with @

web.php

<?php
/*
|--------------------------------------------------------------------------
| Laravel 5 - Route must start with @
|--------------------------------------------------------------------------
|
| A quick snippet showing use of the Route::where(); method that lets you
| define a regex pattern for the route to match, such as the "@" symbol
| at the beginning to denote a user.
|
*/

Route::get('/users/{user}', 'UserController@index')->where('user', '^@.*');