I am trying to configure the url extension and getting the below errors while running the mvn clean install. I have installed the configured the apache-maven and planning to use windows machine-agent. [ERROR] com.appdynamics.extensions.urlmonitor.UrlMonitorTest.urlMonitorExceptionOccurredTest  Time elapsed: 0.002 s  <<< ERROR! java.lang.NoClassDefFoundError: Could not initialize class org.mockito.internal.creation.jmock.ClassImposterizer$3         at org.mockito.internal.creation.jmock.ClassImposterizer.createProxyClass(ClassImposterizer.java:68)         at org.mockito.internal.creation.jmock.ClassImposterizer.imposterise(ClassImposterizer.java:50)         at org.powermock.api.mockito.internal.mockcreation.MockCreator.createMethodInvocationControl(MockCreator.java:100)         at org.powermock.api.mockito.internal.mockcreation.MockCreator.mock(MockCreator.java:58)         at org.powermock.api.mockito.internal.expectation.DefaultConstructorExpectationSetup.createNewSubsituteMock(DefaultConstructorExpectationSetup.java:80)         at org.powermock.api.mockito.internal.expectation.DefaultConstructorExpectationSetup.withArguments(DefaultConstructorExpectationSetup.java:48)         at com.appdynamics.extensions.urlmonitor.UrlMonitorTest.init(UrlMonitorTest.java:50)         at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)         at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)         at java.base/java.lang.reflect.Method.invoke(Method.java:568)         at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)         at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)         at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)         at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)         at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)         at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)         at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)         at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)         at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)         at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)         at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)         at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)         at org.junit.runners.ParentRunner.run(ParentRunner.java:309)         at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:316)         at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:240)         at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:214)         at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:155)         at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:385)         at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:162)         at org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:507)         at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:495) Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.ExceptionInInitializerError [in thread "main"]         at org.mockito.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:167)         at org.mockito.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)         at org.mockito.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:217)         at org.mockito.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145)         at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:117)         at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:109)         at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:105)         at org.mockito.cglib.proxy.Enhancer.<clinit>(Enhancer.java:70)         at org.mockito.internal.creation.jmock.ClassImposterizer.createProxyClass(ClassImposterizer.java:68)         at org.mockito.internal.creation.jmock.ClassImposterizer.imposterise(ClassImposterizer.java:50)         at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:54)         at org.mockito.internal.MockitoCore.mock(MockitoCore.java:45)         at org.mockito.Mockito.mock(Mockito.java:921)         at org.mockito.Mockito.mock(Mockito.java:816)         at com.appdynamics.extensions.urlmonitor.RequestConfigTest.init(RequestConfigTest.java:50)         ... 25 more ... View more