Module `react-native-vector-icons/Ionicons` does not exist in the Haste module map

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error: bundling failed: Error: Unable to resolve module `react-native-vector-icons/Ionicons` from `F:\Andr

tNative\RNApp\App.js`: Module `react-native-vector-icons/Ionicons` does not exist in the Haste module map

错误原因：

react-native-vector-icons没有安装；

解决方案：

npm install react-native-vector-icons