ERROR Invariant Violation: requireNativeComponent: "RNCSafeAreaView" was not found in the UIManager. code example

Example 1: requireNativeComponent: "RNCSafeAreaProvider" was not found in the UIManager.

npm install react-native-safe-area-context
npx pod-install ios 

//add SafeAreaProvider to the app

import { SafeAreaProvider } from 'react-native-safe-area-context';
 
function App() {
  return <SafeAreaProvider>...</SafeAreaProvider>;
}

Example 2: invariant violation: requireNativeComponent: "BVLinearGradient" was not found in the UIManger

expo install expo-linear-gradient