Yii2-日期选择器扩展未安装

Question

在 composer.json 中，我在 require 部分输入了 "nex/yii2-datepicker" : "*" 并且最低稳定性是稳定的。现在我运行composer update，然后显示foll错误

Loading composer repositories with package information 
Updating dependencies (including require-dev)
Content-Length mismatch
http://packagist.org could not be fully loaded, package information was loaded from the local cache and may be out of date

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

问题 1 - 请求的包 nex/yii2-datepicker * 可以满足 nex/yii2-datepicker[dev-master] 但这些与您的要求或最低稳定性冲突

Answer 1

在 composer.json 中替换

“最低稳定性”：“稳定”，

到

“最低稳定性”：“开发”，
“首选稳定”：是的，