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Laravel 5中"Failed opening required bootstrap/../vendor/autoload.php"错误

大家好!我是Laravel 5和PHP的新手。通过Composer安装了框架,但在尝试通过`php artisan serve`运行项目或直接在浏览器中打开时,遇到了致命错误: ``` Fatal error: require(): Failed opening required 'C:\xampp\htdocs\myproject\bootstrap/../vendor/autoload.php' (include_path='C:\xampp\htdocs\myproject\vendor\composer/../../..') in C:\xampp\htdocs\myproject\bootstrap\autoload.php on line 17 ``` 以下是`bootstrap/autoload.php`文件中的代码(第17行): ```php