Minimum supported Gradle version is 4 6 Current version is 4 4 Pleas

Minimum supported Gradle version is 4.6. Current version is 4.4. Please fix the project's Gradle settings. 更新后就构建不了项目了，不更新也不能编译

####在这有讨论本问题的： github.com/smooch/smoo…

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