java.lang.IllegalStateException: Failed to load ApplicationContext

This exception is usually thrown when the Spring application context fails to load or initialize. The cause of this exception can be due to a variety of reasons, including:

1. Missing or incorrect configuration files: Ensure that all the required configuration files are present and correctly configured.

2. Dependency issues: Check if all the dependencies required by your application are present and correctly configured.

3. Classpath issues: Make sure that all the required classes and resources are present in the classpath.

4. Database connectivity issues: If your application is dependent on a database, check if the database connection is correctly configured and accessible.

5. Incorrect application configuration: Ensure that all the application properties are correctly configured.

To resolve this issue, you should carefully examine the error message and try to identify the root cause. Once you have identified the cause, you can take the necessary steps to resolve the issue.