flutter 版本回退

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## mac 系统下查找flutter 目录
which flutter
## 大致会是这样
/Users/liuliang/development/flutter/bin/flutter

进入目录

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cd /Users/liuliang/development/flutter
## 需要回退的版本号
git checkout -b 3.3.10

重新添加依赖

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flutter doctor

确认版本

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flutter --version