克隆了我用来开发和安装成功的Symfony 2.7项目,当我现在运行时

comopser install

我收到以下错误:

PHP堆栈跟踪:PHP 1. ()/ opt / lampp / htdocs / IAG / vendor / sensio / distribution- bundle / Sensio / Bundle / DistributionBundle / Resources / bin / build_bootstrap.php:0 PHP 2. require_once( )/ opt / lampp / htdocs / IAG / vendor / sensio / distribution- bundle / Sensio / Bundle / DistributionBundle / Resources / bin / build_bootstrap.php:56 PHP致命错误:require_once():无法打开所需的'/ opt / lampp / htdocs / IAG / app /../ vendor / Zend / Loader / Autoloader.php'(include_path ='/ opt / lampp / htdocs / IAG / app /../ vendor :: . :/ usr / share / php:/ usr第14行/opt/lampp/htdocs/IAG/app/autoload.php中的/ share / pear')PHP堆栈跟踪:PHP 1. ()/ opt / lampp / htdocs / IAG / vendor / sensio / distribution -bundle / Sensio / Bundle / DistributionBundle / Resources / bin / build_bootstrap.php:0 PHP 2. require_once()/ opt / lampp / htdocs / IAG / vendor / sensio / distribution-bundle / Sensio / Bundle / DistributionBundle / Resources / bin /build_bootstrap.php:56脚本Sensio \ Bundle \ DistributionBundle \ Composer \ ScriptHandler :: buildBootstrap处理post-install-cmd事件终止带有异常的ed [RuntimeException]生成引导程序文件时发生错误 .

我不知道出了什么问题