当创建新的laravel项目时，会出现这种情况

Question

出现

我该怎么做以及

这是compser文件中的installed.json

 "require": {
        "php": ">=5.3.0",
        "psr/container": "^1.0"
    },

这是laravel文件中的composer.json "require": { "php": ">=5.6", "ext-mbstring": "*", "ext-openssl": "*", "doctrine/inflector": "~1.0", "erusev/parsedown": "~1.6", "league/flysystem": "~1.0", "monolog/monolog": "~1.11", "mtdowling/cron-expression": "~1.0", "nesbot/carbon": "~1.20", "paragonie/random_compat": "~1.4|~2.0", "ramsey/uuid": "~3.0", "swiftmailer/swiftmailer": "~5.4", "symfony/console": "~3.2", "symfony/debug": "~3.2", "symfony/finder": "~3.2", "symfony/http-foundation": "~3.2", "symfony/http-kernel": "~3.2", "symfony/process": "~3.2", "symfony/routing": "~3.2", "symfony/var-dumper": "~3.2", "tijsverkoyen/css-to-inline-styles": "~2.2", "vlucas/phpdotenv": "~2.2" }, 请帮帮我