Class loading issue

[Saikat]

I have generated test class using evosuite but observed that some scenarios  are not covered , hence decided to write manually with mockito.But i am getting following errors

ests run: 2, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 8.592 sec <<< FAILURE! - in com.kpmg.cms.core.servlets.ArticleIdGenerationServletTest

testMock(com.kpmg.cms.core.servlets.ArticleIdGenerationServletTest)  Time elapsed: 6.98 sec  <<< ERROR!

org.evosuite.shaded.org.mockito.exceptions.base.MockitoException: 

ClassCastException occurred while creating the mockito mock :

  class to mock : 'com.kpmg.cms.core.services.UniqueArticleIdService', 

  loaded by classloader : 'sun.misc.Launcher$AppClassLoader@6bc7c054'

  created class : 'com.kpmg.cms.core.services.UniqueArticleIdService$MockitoMock$1082284594', 

  loaded by classloader : 'org.evosuite.shaded.net.bytebuddy.dynamic.loading.MultipleParentClassLoader@5fa25896'

  proxy instance class : 'com.kpmg.cms.core.services.UniqueArticleIdService$MockitoMock$1082284594', 

  loaded by classloader : 'org.evosuite.shaded.net.bytebuddy.dynamic.loading.MultipleParentClassLoader@5fa25896'

  instance creation by : ObjenesisInstantiator

You might experience classloading issues, please ask the mockito mailing-list.

at java.lang.Class.cast(Class.java:3369)

at org.evosuite.shaded.org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.ensureMockIsAssignableToMockedType(SubclassByteBuddyMockMaker.java:87)

at org.evosuite.shaded.org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.createMock(SubclassByteBuddyMockMaker.java:51)

at org.evosuite.shaded.org.mockito.internal.creation.bytebuddy.ByteBuddyMockMaker.createMock(ByteBuddyMockMaker.java:25)

at org.evosuite.shaded.org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35)

at org.evosuite.shaded.org.mockito.internal.MockitoCore.mock(MockitoCore.java:65)

at org.evosuite.shaded.org.mockito.Mockito.mock(Mockito.java:1864)

at org.evosuite.shaded.org.mockito.Mockito.mock(Mockito.java:1777)

at com.kpmg.cms.core.servlets.ArticleIdGenerationServletTest.testMock(ArticleIdGenerationServletTest.java:131)