Error: Exception in HostFunction: unordered_map::at: key not found

Question

React Native (iOS) & Realm: [Error: Exception in HostFunction: unordered_map::at: key not found]

Description:

I'm studying a React Native course, and the module uses Realm for data storage. When I call realm.write and realm.generate, it works fine on Android, but it throws the following error on iOS:

[Error: Exception in HostFunction: unordered_map::at: key not found]

Operating System and libraries:

• macOS Ventura 13.4, Apple M1
• XCode 14.3 (14E222b)
• iPhone 12, iOS 16.4 (tried both Apple and Rosetta mode)
• "react-native-get-random-values": "^1.9.0",
• "expo": "~48.0.15",

Code:

function handleDepartureRegister() {
  try {
    // omitted for brevity

    realm.write(() => {
      realm.create('Historic', Historic.generate({
        user_id: user!.id,
        license_plate: licensePlate.toUpperCase(),
        description,
      }))
    });

    Alert.alert('Saída', 'Saída do veículo registrada com sucesso.');

    goBack();
  } catch (error) {
    console.log(error);

    Alert.alert(
      'Erro',
      'Não foi possível registrar a saída do veículo.'
    );

    // omitted for brevity
  }
}

Full code:

https://github.com/ceduardogodoi/ignitefleet/blob/main/src/screens/Departure/index.tsx#L54

Expected Behavior:

It should not throw any error since it works on Android.

Actual Behavior:

It threw an error on iOS.

Any help or guidance would be greatly appreciated. I appreciate any help you can provide.

What I've tried:

• Run pod install on the ios folder
• Delete and create the simulator again
• Tried to run the simulator on both Apple and Rosetta mode
• Re-installing the expo-crypto library (and running pod install again)

Answer 1

Steps:

• Remove the line for react-native-get-random-values from package.json
• Remove package-lock.json
• Remove node_modules
• Run npm i to install the dependencies
• Run npm i [email protected]