composer require 报错

Your requirements could not be resolved to an installable set of packages.

下载一个包 报了这个错，

还有报错信息是

Problem 1
    - intervention/image 2.3.8 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.8 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.7 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.6 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.5 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.4 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.3 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.2 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.1 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.0 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - Installation request for intervention/image ^2.3 -> satisfiable by intervention/image[2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7, 2.3.8].
  To enable extensions, verify that they are enabled in those .ini files:
    - /usr/local/php/etc/php.ini
    - /usr/local/php/etc/php.d/ext-imagick.ini
    - /usr/local/php/etc/php.d/ext-memcache.ini
    - /usr/local/php/etc/php.d/ext-memcached.ini
    - /usr/local/php/etc/php.d/ext-opcache.ini
    - /usr/local/php/etc/php.d/ext-redis.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

Installation failed, reverting ./composer.json to its original content.

看报错信息，发现是我的环境里 的php扩展 fileinfo 没有安装

我的环境是 OneinStack ,所以找到 这个包,然后 在里面执行 ./addons.sh

然后第四项

按照条件执行安装就行了

最后执行 composer require intervention/image

Ok

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