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java.lang.AssertionError: null	at com.gemstone.gemfire.internal.cache.ha.ThreadIdentifier$Bits.shift(ThreadIdentifier.java:119)	at com.gemstone.gemfire.internal.cache.ha.ThreadIdentifier$WanType.generateWanId(ThreadIdentifier.java:67)	at com.gemstone.gemfire.internal.cache.ha.ThreadIdentifier.createFakeThreadIDForParallelGSPrimaryBucket(ThreadIdentifier.java:281)	at com.gemstone.gemfire.internal.cache.wan.serial.SerialGatewaySenderImpl.setModifiedEventId(SerialGatewaySenderImpl.java:251)	at com.gemstone.gemfire.internal.cache.wan.AbstractGatewaySender.distribute(AbstractGatewaySender.java:917)	at com.gemstone.gemfire.internal.cache.LocalRegion.notifyGatewayHubs(LocalRegion.java:6429)	at com.gemstone.gemfire.internal.cache.LocalRegion.basicPutPart2(LocalRegion.java:5982)	at com.gemstone.gemfire.internal.cache.AbstractRegionMap.basicPut(AbstractRegionMap.java:2930)	at com.gemstone.gemfire.internal.cache.LocalRegion.virtualPut(LocalRegion.java:5800)	at com.gemstone.gemfire.internal.cache.DistributedRegion.virtualPut(DistributedRegion.java:386)	at com.gemstone.gemfire.internal.cache.LocalRegionDataView.putEntry(LocalRegionDataView.java:118)	at com.gemstone.gemfire.internal.cache.LocalRegion.basicPut(LocalRegion.java:5190)	at com.gemstone.gemfire.internal.cache.LocalRegion.validatedPut(LocalRegion.java:1581)	at com.gemstone.gemfire.internal.cache.LocalRegion.put(LocalRegion.java:1564)	at com.gemstone.gemfire.internal.cache.AbstractRegion.put(AbstractRegion.java:327)