Java CommandLineRunner Error: 'IllegalStateException: Failed to execute CommandLineRunner'

This exception is thrown when the CommandLineRunner fails to execute. The CommandLineRunner interface is used to execute a specific piece of code when an application is started.

There can be several reasons why this exception is thrown, including:

1. Incorrect configuration: The CommandLineRunner may not be configured correctly. Check the configuration files to ensure that everything is set up properly.

2. Dependencies: The CommandLineRunner may have dependencies that are not installed or not configured correctly. Check the dependencies to ensure that they are installed and configured correctly.

3. System resources: The CommandLineRunner may be trying to access system resources that are not available or not accessible. Check the system resources to ensure that they are available and accessible.

4. Permissions: The CommandLineRunner may not have the necessary permissions to execute. Check the permissions to ensure that they are set up correctly.

5. Code errors: There may be errors in the code that are causing the CommandLineRunner to fail. Review the code to ensure that it is correct and free of errors.

To fix this exception, you may need to troubleshoot the cause of the issue and make the necessary changes to the configuration or code.