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java.lang.NullPointerException: 	at java.io.ByteArrayInputStream.(ByteArrayInputStream.java:106)	at com.couchbase.lite.Attachment.getContent(Attachment.java:126)	at com.couchbase.lite.ManagerTest$11.onComplete(ManagerTest.java:645)	at com.couchbase.lite.ManagerTest.checkReplacedDatabase(ManagerTest.java:603)	at com.couchbase.lite.ManagerTest._testUpgradeDatabase(ManagerTest.java:630)	at com.couchbase.lite.ManagerTest.testUpgradeDatabase(ManagerTest.java:608)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at junit.framework.TestCase.runTest(TestCase.java:176)	at junit.framework.TestCase.runBare(TestCase.java:141)	at com.couchbase.lite.LiteTestCase.runBare(LiteTestCase.java:33)	at com.couchbase.lite.LiteTestCaseWithDB.runBare(LiteTestCaseWithDB.java:100)	at junit.framework.TestResult$1.protect(TestResult.java:122)	at junit.framework.TestResult.runProtected(TestResult.java:142)	at junit.framework.TestResult.run(TestResult.java:125)	at junit.framework.TestCase.run(TestCase.java:129)	at junit.framework.TestSuite.runTest(TestSuite.java:252)	at junit.framework.TestSuite.run(TestSuite.java:247)	at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:86)	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:86)	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:49)	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:64)	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:50)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)	at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)	at org.gradle.messaging.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)	at org.gradle.messaging.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)	at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)	at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:106)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)	at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)	at org.gradle.messaging.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:360)	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)	at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)