Laravel 安装依赖或者更新的时候 执行 Composer update 无法加载框架

执行composer update 提示是这样的结果，按照其他的扩展包的时候也是这样，不知道是哪里出问题了，提示是OpenSSL出问题了，但是我实在不知道该怎么解决。
我用的是xmapp + laravel 5.5

λ composer update
The "https://packagist.laravel-china.org/packag..." file could not be downloaded: SSL operation failed with code 1. OpenSSL Error messages:
error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed
Failed to enable crypto
failed to open stream: operation failed
https://packagist.laravel-china.org could not be fully loaded, package information was loaded from the local cache and may be out of date
Loading composer repositories with package information
The "https://packagist.laravel-china.org/packag..." file could not be downloaded: SSL operation failed with code 1. OpenSSL Error messages:
error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed
Failed to enable crypto
failed to open stream: operation failed
https://packagist.laravel-china.org could not be fully loaded, package information was loaded from the local cache and may be out of date
Updating dependencies (including require-dev)
Nothing to install or update
Package phpoffice/phpexcel is abandoned, you should avoid using it. Use phpoffice/phpspreadsheet instead.
Generating optimized autoload files
Carbon 1 is deprecated, see how to migrate to Carbon 2.
https://carbon.nesbot.com/docs/#api-carbon...
You can run ".\vendor\bin\upgrade-carbon" to get help in updating carbon and other frameworks and libraries that depend on it.

Illuminate\Foundation\ComposerScripts::postUpdate
php artisan optimize