selenium - java.lang.NoClassDefFoundError: freemarker/template/TemplateModelException -

tried create advanced html reports using extentreports jar, throwing below error.

java.lang.noclassdeffounderror: freemarker/template/templatemodelexception

code :-

public class xtentreport {     webdriver driver;     extentreports report;     extenttest logger;   @test public void verifyxreport() {     report = new extentreports("d:\\selenium_reports\\advancereport.html");     logger=report.starttest("startingtc"); driver= new firefoxdriver();    driver.manage().window().maximize(); logger.log(logstatus.info,"browser , running");     driver.get("google.com");     logger.log(logstatus.pass,"test completed"); report.endtest(logger);     report.flush();     }   }  

you need add freemarker-<version>.jar yor classpath.