Java 'IllegalStateException: Could not load TestContextBootstrapper' Error Resolution Guide

This exception occurs when the TestContextBootstrapper class specified in the '@BootstrapWith' annotation is not found or not available.

To fix this issue, you can try one of the following solutions:

1. Specify the correct TestContextBootstrapper class in the '@BootstrapWith' annotation's 'value' attribute. For example, if you are using the SpringBootTestContextBootstrapper, you can specify it as follows:

   @BootstrapWith(SpringBootTestContextBootstrapper.class)
   

2. Make sure that the required dependencies are included in your project's classpath. Check if you have the necessary libraries or modules required for the TestContextBootstrapper class.

3. If you are using a custom TestContextBootstrapper class, make sure it is available and accessible. Check if the class is present in your project's source code or in any external libraries that you are using.

If none of these solutions work, it is possible that there is an issue with the configuration or setup of your testing environment. Double-check your project's configuration files, such as the build.gradle or pom.xml, and verify that all the necessary dependencies and configurations are correctly specified.