[Solution] ERROR Invariant Violation: Failed to call into JavaScript module method AppRegistry.runApplication()

“ERROR Invariant Violation: Failed to call into JavaScript module method AppRegistry.runApplication()” is a common error that developers encounter when working with React Native applications. In this article, we’ll answer some frequently asked questions and provide a solution to this error.

What does the error message mean?

This error message indicates that React Native is unable to call the “runApplication” method from the AppRegistry module, which results in the app failing to launch.

What causes this error?

Here are the reasons why this error may occur, including:

• Incorrect import statements for the AppRegistry module
• Inconsistent versions of React Native libraries
• An incorrect setup for the main component in your application

How can I fix this error?

To resolve the “ERROR Invariant Violation: Failed to call into JavaScript module method AppRegistry.runApplication()” error, you can follow these steps:

• Verify that your import statement for the AppRegistry module is correct

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import { AppRegistry } from 'react-native';

• Ensure that the main component in your application is set up correctly:

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AppRegistry.registerComponent('MyApp', () => MyApp);

• Check if all React Native libraries are of the same version:

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"react-native": "0.63.2"

• Clear the cache of your React Native app by running the following command in the terminal:

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react-native start --reset-cache

By following these listed steps, you should be able to resolve the “ERROR Invariant Violation: Failed to call into JavaScript module method AppRegistry.runApplication()” error and get your React Native app up and running again. If you are still facing any other issues or have any questions, you can reach out to the React Native community for assistance.