使用Composer Install命令时出错

Question

我正在尝试安装一个包形式作曲家需要但我收到以下错误 [RuntimeException的] 无法删除/var/www/html/santrack/vendor/mtdowling/cron-expression/composer.json：

作曲家看起来像

"require": {
    "php": ">=7.0.0",
    "appstract/laravel-bootstrap-components": "^0.2.0",
    "fideloper/proxy": "~3.3",
    "guzzlehttp/guzzle": "^6.3",
    "jenssegers/mongodb": "^3.3",
    "laracasts/flash": "^3.0",
    "laravel/framework": "5.5.*",
    "laravel/tinker": "~1.0",
    "spatie/laravel-permission": "^2.7"
},