Appium - Running Data driven testing using Test NG framework issue

Getting the below issue while i am trying to run the script using Test NG framework.

Issue - Appium - While Running Data driven testing using Test NG framework

  • Platform (iOS or Android) - Android
  • Appium version – 1.4.16.1
  • Emulator/Simulator or Real Device – Real Device (Lenova K5)
  • Client langauage (language binding) - Java
  • OS – Windows

------------------------------------Error --------------------------------------------------------------------
[TestNG] Running:
C:\Users\v-srkak\AppData\Local\Temp\testng-eclipse-1846721688\testng-customsuite.xml

First Row Number/index:0***Last Row Number/index:2
Row Count is:3***Column count is : 2
customername
test

dummy
sample

FAILED: testLocatingElements(“customername”, “test”)
java.lang.NullPointerException
at BookingsTest.testLocatingElements(BookingsTest.java:57)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:639)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:816)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1124)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
at org.testng.TestRunner.privateRun(TestRunner.java:774)
at org.testng.TestRunner.run(TestRunner.java:624)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:359)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:354)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:312)
at org.testng.SuiteRunner.run(SuiteRunner.java:261)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1215)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1140)
at org.testng.TestNG.run(TestNG.java:1048)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:132)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:236)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:81)

FAILED: testLocatingElements(“dummy”, “sample”)
java.lang.NullPointerException
at BookingsTest.testLocatingElements(BookingsTest.java:57)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:639)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:816)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1124)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
at org.testng.TestRunner.privateRun(TestRunner.java:774)
at org.testng.TestRunner.run(TestRunner.java:624)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:359)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:354)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:312)
at org.testng.SuiteRunner.run(SuiteRunner.java:261)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1215)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1140)
at org.testng.TestNG.run(TestNG.java:1048)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:132)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:236)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:81)

===============================================
Default test
Tests run: 2, Failures: 2, Skips: 0

===============================================
Default suite
Total tests run: 2, Failures: 2, Skips: 0

[TestNG] Time taken by org.testng.reporters.SuiteHTMLReporter@340f438e: 62 ms
[TestNG] Time taken by org.testng.reporters.EmailableReporter2@edf4efb: 39 ms
[TestNG] Time taken by org.testng.reporters.jq.Main@19dfb72a: 128 ms
[TestNG] Time taken by [FailedReporter passed=0 failed=0 skipped=0]: 17 ms
[TestNG] Time taken by org.testng.reporters.XMLReporter@3796751b: 11 ms
[TestNG] Time taken by org.testng.reporters.JUnitReportReporter@1554909b: 11 ms
---------------------------------------------------------Error End -------------------------------------------------