Getting Errors while adding ExtentManager.java class

Hi Team,

I am getting errors while adding Extentmanager.java class to my project. can some one pls help to correct .

import java.io.File;
import java.util.Date;

import com.relevantcodes.extentreports.DisplayOrder;
import com.relevantcodes.extentreports.ExtentReports;

public class ExtentManager {
private static ExtentReports extent;

public static ExtentReports getInstance() {
if (extent == null) {
Date d=new Date();

extent = new ExtentReports("c:\\report\\"+fileName, true, DisplayOrder.NEWEST_FIRST);


extent.loadConfig(new File(System.getProperty("user.dir")+"//ReportsConfig.xml"));
// optional
extent.addSystemInfo("Selenium Version", "2.53.0").addSystemInfo(
"Environment", "QA");
}
return extent;
}
}

I am getting options to create ExtentReport class and change the extent to Element type. Pls help me to correct it.