The java.lang.NoClassDefFoundError: io/cucumber/core/gherkin/FeatureParser error occurs when the Cucumber framework cannot find a class that is supposed to be available at runtime. This often indicates a problem with your Cucumber dependency setup, such as missing or incompatible versions of Cucumber or Gherkin libraries.
Here’s how to resolve it:
Make sure that you have the correct versions of Cucumber and Gherkin in your pom.xml (if using Maven) or build.gradle (if using Gradle). The FeatureParser class is part of the gherkin module, so you need to include the proper Gherkin dependency as well.
If you’re using Maven, ensure the following dependencies are included in your pom.xml:
Ensure that the Cucumber and Gherkin versions are compatible. Sometimes, the NoClassDefFoundError occurs because different versions of libraries are incompatible. For instance, if you are using Cucumber 7.x, make sure you’re using the corresponding version of Gherkin, which is around 27.x. 3. Clean and Rebuild Your Project
After updating your dependencies, clean and rebuild your project to ensure that all necessary libraries are downloaded and linked properly:
If you are using other libraries that might have a dependency on Gherkin, ensure that they are not pulling in conflicting versions of the Gherkin library. You can check for dependency conflicts by using:
Resolve any version conflicts by excluding the older versions or forcing the required versions. 5. Update Cucumber Plugins (if applicable)
If you are using any Cucumber plugins (e.g., for IDEs like IntelliJ or Eclipse), ensure they are updated to the latest versions that match the Cucumber version you are using. 6. Recheck Classpath Setup
Ensure that all required JARs, including the Gherkin library, are available on your classpath. If running from an IDE, verify that all the required dependencies are correctly linked to your project.