Extent report on BDD

Hi,

I am getting following error while setting up Extent report for BDD, glad if anyone can help.

Reason:
com.kms.katalon.core.exception.StepFailedException: Keyword runFeatureFile was failed (Root cause: java.lang.NoClassDefFoundError: ExtentReports
at cucumber.runtime.java.MethodScanner.scan(MethodScanner.java:40)
at cucumber.runtime.java.JavaBackend.loadGlue(JavaBackend.java:82)
at cucumber.runner.Runner.(Runner.java:36)
at cucumber.runtime.Runtime.(Runtime.java:65)
at cucumber.runtime.Runtime.(Runtime.java:46)
at cucumber.runtime.Runtime.(Runtime.java:42)
at cucumber.api.cli.Main.run(Main.java:34)
at cucumber.api.cli.Main$run.call(Unknown Source)

Thanks,
Thushar