的Symfony2自动加载器找到文件,但找不到类

我试图在没有供应商的情况下安装symfony2,并且在运行app_dev.php时不断出现以下错误：

RuntimeException: The autoloader expected class "Symfony\Component\EventDispatcher\Event" to be defined in file "/var/www/caremonk/vendor/symfony/symfony/src/Symfony/Component/EventDispatcher/Event.php". The file was found but the class was not in it, the class name or namespace probably has a typo.

我已经通过以下方式安装了正确的文件和供应商：
     php composer.phar更新
     php composer.phar安装

我还检查了Symfony2抱怨的文件,该文件的内容为：

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\EventDispatcher;

/**
 * Event is the base class for classes containing event data.
 *
 * This class contains no event data. It is used by events that do not pass
 * state information to an event handler when an event is raised.
 *
 * You can call the method stopPropagation() to abort the execution of
 * further listeners in your event listener.
 *
 * @author  Guilherme Blanco <guilhermeblanco@hotmail.com>
 * @author  Jonathan Wage <jonwage@gmail.com>
 * @author  Roman Borschel <roman@code-factory.org>
 * @author  Bernhard Schussek <bschussek@gmail.com>
 *
 * @api
 */
class Event
{
   // Some more code
}

这是我没有接触过的标准symfony2类,因此我对需要做的事情有些迷茫.如何摆脱这个错误？

解决方法:

昨晚遇到了类似的问题.禁用和重新启用APC似乎可以解决问题.

标签：autoloader,symfony,php
来源： https://codeday.me/bug/20191030/1969671.html