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java.lang.IllegalArgumentException: null	at java.sql.Date.valueOf(Unknown Source)	at net.sourceforge.jtds.jdbc.Support.convert(Support.java:502)	at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.setObjectBase(JtdsPreparedStatement.java:371)	at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.setObject(JtdsPreparedStatement.java:674)	at org.apache.commons.dbcp.DelegatingPreparedStatement.setObject(DelegatingPreparedStatement.java:163)	at org.springframework.jdbc.core.StatementCreatorUtils.setValue(StatementCreatorUtils.java:315)	at org.springframework.jdbc.core.StatementCreatorUtils.setParameterValueInternal(StatementCreatorUtils.java:217)	at org.springframework.jdbc.core.StatementCreatorUtils.setParameterValue(StatementCreatorUtils.java:145)	at org.jasig.ssp.util.importer.job.staging.SqlServerStagingTableWriter$1.doInPreparedStatement(SqlServerStagingTableWriter.java:138)	at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:589)	at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:617)	at org.jasig.ssp.util.importer.job.staging.SqlServerStagingTableWriter.write(SqlServerStagingTableWriter.java:119)	at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:132)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:120)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at $Proxy0.write(Unknown Source)	at org.springframework.batch.item.support.CompositeItemWriter.write(CompositeItemWriter.java:51)	at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:132)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:120)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at $Proxy8.write(Unknown Source)	at org.springframework.batch.core.step.item.SimpleChunkProcessor.writeItems(SimpleChunkProcessor.java:175)	at org.springframework.batch.core.step.item.FaultTolerantChunkProcessor.scan(FaultTolerantChunkProcessor.java:580)	at org.springframework.batch.core.step.item.FaultTolerantChunkProcessor.access$900(FaultTolerantChunkProcessor.java:50)	at org.springframework.batch.core.step.item.FaultTolerantChunkProcessor$5.recover(FaultTolerantChunkProcessor.java:413)	at org.springframework.retry.support.RetryTemplate.handleRetryExhausted(RetryTemplate.java:435)	at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:304)	at org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:188)	at org.springframework.batch.core.step.item.BatchRetryTemplate.execute(BatchRetryTemplate.java:217)	at org.springframework.batch.core.step.item.FaultTolerantChunkProcessor.write(FaultTolerantChunkProcessor.java:423)	at org.springframework.batch.core.step.item.SimpleChunkProcessor.process(SimpleChunkProcessor.java:199)	at org.springframework.batch.core.step.item.ChunkOrientedTasklet.execute(ChunkOrientedTasklet.java:75)	at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:395)	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)	at org.springframework.batch.core.step.tasklet.TaskletStep$2.doInChunkContext(TaskletStep.java:267)	at org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration(StepContextRepeatCallback.java:77)	at org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:368)	at org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215)	at org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:144)	at org.springframework.batch.core.step.tasklet.TaskletStep.doExecute(TaskletStep.java:253)	at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:195)	at org.springframework.batch.core.partition.support.TaskExecutorPartitionHandler$1.call(TaskExecutorPartitionHandler.java:139)	at org.springframework.batch.core.partition.support.TaskExecutorPartitionHandler$1.call(TaskExecutorPartitionHandler.java:136)	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)	at java.util.concurrent.FutureTask.run(Unknown Source)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)	at java.lang.Thread.run(Unknown Source)