composer 报错：Your requirements could not be resolved to an installable set of packages 解决方法

 composer 报错：

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

xxxxxxxxxxxxxxxxxxxxxx-> no matching package found.

xxxxxxxxxxxxxxxxxxxxxx-> no matching package found.

Potential causes:
- A typo in the package name

- The package is not available in a stable-enough version according to your minimum-stability setting

see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.

这个错误可能是fxp/composer-asset-plugin 组件的问题

先更新composer

1.php composer.phar self-update

然后更新组件fxp/composer-asset-plugin

2.php composer.phar global require "fxp/composer-asset-plugin:~1.1.1"