用Taro开发微信小程序插件的环境连init版本都没跑起来

[vee2046]

有大神用taro开发过微信小程序插件吗，我连文档里的demo环境都没跑来

安装了最新的3.0.2 taro cli
yarn install时就会显示 Couldn't find any versions for "@tarojs/components-qa" that matches "3.0.2"，手动选择最高版本2.2.10

taro build --plugin weapp --watch
报错：UnhandledPromiseRejectionWarning: TypeError: Cannot read property '0' of undefined