Laravel访问出错错误信息：`Warning: require(/vendor/autoload.php): failed to open stream: No such file or dire

错误信息：`Warning: require(/http/www.mywakavLee.cn/bootstrap/../vendor/autoload.php): failed to open stream: No such file or directory in /http/www.mywakavLee.cn/bootstrap/autoload.php on line 17

Fatal error: require(): Failed opening required ‘/http/www.mywakavLee.cn/bootstrap/../vendor/autoload.php’ (include_path=’.:/usr/local/lib/php’) in /http/www.mywakavLee.cn/bootstrap/autoload.php on line 17`

原因：网站根目录下缺少vendor这个存放laraver依赖包的目录
解决方法：使用composer install进行安装（没有安装过的情况下，以前安装过的话使用：composer update）