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java.lang.NullPointerException: 	at java.util.Arrays.fill(Arrays.java:2287)	at kodo.jdbc.query.JDBCExpressionFactory.clear(JDBCExpressionFactory.java:178)	at kodo.jdbc.query.JDBCExpressionFactory.evaluate(JDBCExpressionFactory.java:85)	at kodo.jdbc.query.JDBCQuery.executeQuery(JDBCQuery.java:106)	at kodo.query.JDOQLQuery$DataStoreExecutor.executeQuery(JDOQLQuery.java:478)	at kodo.query.AbstractQuery.executeWithMap(AbstractQuery.java:829)	at kodo.query.AbstractQuery.executeWithMap(AbstractQuery.java:865)	at kodo.query.AbstractQuery.executeWithArray(AbstractQuery.java:770)	at kodo.query.AbstractQuery.execute(AbstractQuery.java:734)	at com.correlat.intranet.projectmanagement.TaskPeer.findByOpenAndLoggedTime(TaskPeer.java:95)	at com.correlat.intranet.projectmanagement.TaskTest.testFindByOpenAndLoggedTime(TaskTest.java:1838)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl..java:25)	at com.intellij.rt.execution.junit2.IdeaJUnitAgent.doRun(Unknown Source)	at com.intellij.rt.execution.junit.TextTestRunner2.startRunnerWithArgs(UnknownSource)	at com.intellij.rt.execution.junit2.JUnitStarter.prepareStreamsAndStart(UnknownSource)	at com.intellij.rt.execution.junit2.JUnitStarter.main(Unknown Source)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl..java:25)	at com.intellij.rt.execution.application.AppMain.main(Unknown Source)