composer require workerman/gateway-worker时报错

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

Problem 1
- phpoffice/phpspreadsheet 1.10.1 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
- phpoffice/phpspreadsheet 1.10.1 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
- Installation request for phpoffice/phpspreadsheet (installed at 1.10.1) -> satisfiable by phpoffice/phpspreadsheet[1.10.1].

To enable extensions, verify that they are enabled in your .ini files:
- /www/server/php/72/etc/php.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.

原因：缺少fileinfo扩展

解决办法：找度娘，安装完扩展后

执行安装：

composer require phpoffice/phpspreadsheet=1.10.1  

等待成功，然后在执行

composer require workerman/gateway-worker

完成。