在laravel框架中获得致命错误异常

I just followed the tutorial from youtube and I found this error (before I found this, I change my appname to Chatty by php artisan)

Whoops, looks like something went wrong.

1/1 FatalErrorException in HomeController.php line 3: syntax error, unexpected 'Chatty' (T_STRING) in HomeController.php line 3

<?php

namepsace Chatty\Http\Controllers;

class HomeController extends Controller
  {
      public function index()
      {
        return view('home');
      }
  }