致命错误：require（）：无法打开所需的'D：\ Xampp \ htdocs \ laravel_project \ bootstrap /../ vendor / autoload.php'（include_path ='D：\ Xampp \ php \ PEAR'）

Question

我想安装laravel 5.2。但这给了我这个错误。

这是错误消息

Warning: require(D:\Xampp\htdocs\laravel_project\bootstrap/../vendor/autoload.php): failed to open stream: No such file or directory in D:\Xampp\htdocs\laravel_project\bootstrap\autoload.php on line 17

Fatal error: require(): Failed opening required 'D:\Xampp\htdocs\laravel_project\bootstrap/../vendor/autoload.php' (include_path='D:\Xampp\php\PEAR') in D:\Xampp\htdocs\laravel_project\bootstrap\autoload.php on line 17