listeners

While using listeners in .XML file, it's displaying the below error in the console. Any solution pls. 

[TestNG] Running:
D:\Selenium Class_Sep\Framework\New folder\MyOwnProject\DataDrivenFramework\src\test\resources\PortfolioSuite.xml

java.lang.AbstractMethodError
at org.testng.TestRunner.fireEvent(TestRunner.java:1236)
at org.testng.TestRunner.beforeRun(TestRunner.java:651)
at org.testng.TestRunner.run(TestRunner.java:624)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:366)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:361)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:319)
at org.testng.SuiteRunner.run(SuiteRunner.java:268)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1244)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1169)
at org.testng.TestNG.run(TestNG.java:1064)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:113)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:206)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:177)