PHP致命错误:Class 'User'在第1行eval()'d代码中没有找到

我使用的是ENTRUST (Laravel 5 Package)。当我在Php工匠的Shell命令行中使用命令User::all();时。提示错误

PHP致命错误:在第一行eval()'d代码中找不到Class 'User'

但尝试2-3不同的组合(这是错误的)后，如果我使用相同的User::all();，它给了我正确的结果。它看起来很奇怪。

我对PHP和Laravel都是新手。

User.php

<?php
use Zizaco'Entrust'Traits'EntrustUserTrait;
class User extends Eloquent
{
    use EntrustUserTrait; // add this trait to your user model
}

:

Psy Shell v0.7.2 (PHP 5.5.9 ΓÇö cli) by Justin Hileman
>>> User::all();
PHP Fatal error:  Class 'User' not found in eval()'d code on line 1
>>> App/User::all();
PHP Fatal error:  Class 'User' not found in eval()'d code on line 1
>>> App'User::all();
PHP Fatal error:  Class 'App'User' not found in eval()'d code on line 1
>>> User::all();
=> Illuminate'Database'Eloquent'Collection {#664
     all: [
       User {#665
         id: 1,
         name: "Kartik",
         email: "******************",
         password: "qwerty",
         remember_token: null,
         created_at: "2016-08-18 17:13:40",
         updated_at: "2016-08-18 17:13:40",
       },
       User {#666
         id: 2,
         name: "Bhandari",
         email: "**************",
         password: "qwerty",
         remember_token: null,
         created_at: "2016-08-20 11:37:26",
         updated_at: "2016-08-20 11:37:26",
       },
     ],
   }