找不到Laravel 5.5特性

Question

I can't wrap my head around this, as I have this on another project and works just fine. It is currently giving me this error

Symfony \\ Component \\ Debug \\ Exception \\ FatalErrorException (E_UNKNOWN) Trait 'App\\Traits\\ResponseTrait' not found

The UserRepository works just fine, the trait does not. I've tried renaming the trait, moving it to the repository folder, chmod it to 777, and I have no idea what could be wrong.

Meet my HomeController, the laravel's default:

<?php
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Repositories\UserRepository as User;
use App\Traits\ResponseTrait;

class HomeController extends Controller
{
  use ResponseTrait;

  private $user;

  /**
  * Create a new controller instance.
  *
  * @return void
  */
  public function __construct(User $user)
  {
    $this->user = $user;
    $this->middleware('auth');
  }

  /**
  * Show the application dashboard.
  *
  * @return \Illuminate\Http\Response
  */
  public function index()
  {
    //dd($this->user->all()->toArray());
    //You can ignore the self:: part, as it doesn't reach this far.
    self::setData($this->user->all()->toArray());
    return "test";
    return view('home');
  }
}

The trait:

<?

namespace App\Traits;

trait ResponseTrait {
  public function setData($array) {

  }
}

The trait's path is /app/Traits/ResponseTrait.php

At my composer.json, I've got PSR-4 autoload with the App directive.

"psr-4": {
   "App\\": "app/"
}

Edit1: I have tried composer dump-autoload, issue remains

Answer 1

Don't use <? , always use <?php .

Short open tags need to be enabled in php.ini and are not widely supported because they conflict with other languages.