Starting Apache from XAMPP control it showing me error

Hello, 

Error on XAMPP while starting apache

2:03:31 AM [Apache] Error: Apache shutdown unexpectedly.
2:03:31 AM [Apache] This may be due to a blocked port, missing dependencies,
2:03:31 AM [Apache] improper privileges, a crash, or a shutdown by another method.
2:03:31 AM [Apache] Press the Logs button to view error logs and check
2:03:31 AM [Apache] the Windows Event Viewer for more clues
2:03:31 AM [Apache] If you need more help, copy and post this
2:03:31 AM [Apache] entire log window on the forums

I am learning 19th module part 1 where I need to start Apache in XAMPP which showing me error and didn't get started. Also when I run my code its showing me below error

Please help me I am suck cannot proceed further 

java.lang.NoSuchMethodError: org.testng.TestRunner.addListener(Ljava/lang/Object;)V
at org.testng.remote.support.RemoteTestNG6_9_10$1.newTestRunner(RemoteTestNG6_9_10.java:32)
at org.testng.remote.support.RemoteTestNG6_9_10$DelegatingTestRunnerFactory.newTestRunner(RemoteTestNG6_9_10.java:61)
at org.testng.SuiteRunner$ProxyTestRunnerFactory.newTestRunner(SuiteRunner.java:713)
at org.testng.SuiteRunner.init(SuiteRunner.java:260)
at org.testng.SuiteRunner.<init>(SuiteRunner.java:198)
at org.testng.TestNG.createSuiteRunner(TestNG.java:1271)
at org.testng.TestNG.createSuiteRunners(TestNG.java:1249)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1107)
at org.testng.TestNG.runSuites(TestNG.java:1028)
at org.testng.TestNG.run(TestNG.java:996)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:126)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:152)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:57)