java.lang.NullPointerException

at org.xwiki.model.internal.reference.DefaultStringEntityReferenceSerializer.serializeEntityReference(DefaultStringEntityReferenceSerializer.java:88)

at org.xwiki.model.internal.reference.AbstractStringEntityReferenceSerializer.serialize(AbstractStringEntityReferenceSerializer.java:44)

at org.xwiki.test.jmeter.HTTPPerformanceTest.createSample(HTTPPerformanceTest.java:94)

at org.xwiki.test.jmeter.HTTPPerformanceTest.addXarFiles(HTTPPerformanceTest.java:85)

at org.xwiki.test.jmeter.HTTPPerformanceTest.guest(HTTPPerformanceTest.java:190)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)

at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

at org.junit.runners.Suite.runChild(Suite.java:128)

at org.junit.runners.Suite.runChild(Suite.java:27)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

at org.junit.extensions.cpsuite.ClasspathSuite.run(ClasspathSuite.java:194)

at org.xwiki.test.integration.XWikiExecutorSuite.run(XWikiExecutorSuite.java:195)

at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:367)

at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:274)

at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)

at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:161)

at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:290)

at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:242)

at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:121)