(7.1.z) NPE in ejb client and clean shutdown ERROR [org.jboss.ejb.client.invocation] (default task-8) EJBCLIENT000509: Unexpected exception processing EJB request: java.lang.NullPointerException

ESC[0m13:59:55,004 INFO  [org.jboss.as.server] (management-handler-thread - 1) WFLYSRV0211: Suspending server with 15000 ms timeout.
ESC[0mESC[0m13:59:55,006 INFO  [org.jboss.as.ejb3] (management-handler-thread - 1) WFLYEJB0493: EJB subsystem suspension complete
ESC[0mESC[0m13:59:55,008 INFO  [org.jboss.as.server] (Management Triggered Shutdown) WFLYSRV0241: Shutting down in response to management operation 'shutdown'
ESC[0mESC[0m13:59:55,027 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-3) WFLYUT0019: Host default-host stopping
ESC[0mESC[0m13:59:55,028 INFO  [org.jboss.modcluster] (ServerService Thread Pool -- 72) MODCLUSTER000002: Initiating mod_cluster shutdown
ESC[0mESC[0m13:59:55,039 INFO  [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (MSC service thread 1-7) ISPN000080: Disconnecting JGroups channel ejb
ESC[0mESC[0m13:59:55,039 INFO  [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (MSC service thread 1-1) ISPN000080: Disconnecting JGroups channel ejb
ESC[0mESC[0m13:59:55,039 INFO  [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (MSC service thread 1-6) ISPN000080: Disconnecting JGroups channel ejb
ESC[0mESC[0m13:59:55,040 INFO  [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (MSC service thread 1-1) ISPN000082: Stopping the RpcDispatcher for channel ejb
ESC[0mESC[0m13:59:55,040 INFO  [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (MSC service thread 1-7) ISPN000082: Stopping the RpcDispatcher for channel ejb
ESC[0mESC[0m13:59:55,040 INFO  [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (MSC service thread 1-6) ISPN000082: Stopping the RpcDispatcher for channel ejb
ESC[0mESC[0m13:59:55,042 INFO  [org.infinispan.eviction.impl.PassivationManagerImpl] (ServerService Thread Pool -- 74) ISPN000029: Passivating all entries to disk
ESC[0mESC[0m13:59:55,046 INFO  [org.infinispan.eviction.impl.PassivationManagerImpl] (ServerService Thread Pool -- 74) ISPN000030: Passivated 2 entries in 3 milliseconds
ESC[0mESC[0m13:59:55,055 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-5) WFLYJCA0010: Unbound data source [java:jboss/datasources/ExampleDS]
ESC[0mESC[0m13:59:55,055 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 74) WFLYCLINF0003: Stopped twocluster-terminus.jar cache from ejb container
ESC[0m13:59:55,057 DEBUG [org.jboss.ejb.client.invocation] (pool-1-thread-1) Calling invoke(module = /twocluster-forwarder-tx/ForwardingStatefulSBImpl, strong affinity = Cluster "ejb-forwarder", weak affinity = Node "clusterA-node0"):
ESC[0m13:59:55,059 INFO  [org.jboss.as.test.clustering.twoclusters.bean.forwarding.AbstractForwardingStatefulSBImpl] (default task-124) getSerialAndIncrement() called on forwarding node clusterA-node0
ESC[0mESC[31m13:59:55,062 ERROR [org.jboss.ejb.client.invocation] (default task-8) EJBCLIENT000509: Unexpected exception processing EJB request: java.lang.NullPointerException
        at org.jboss.as.ejb3.deployment.DeploymentRepository.getStartedModules(DeploymentRepository.java:202)
        at org.jboss.as.ejb3.remote.AssociationImpl.findEJB(AssociationImpl.java:382)
        at org.jboss.as.ejb3.remote.AssociationImpl.receiveInvocationRequest(AssociationImpl.java:115)
        at org.jboss.ejb.protocol.remote.EJBServerChannel$ReceiverImpl.handleInvocationRequest(EJBServerChannel.java:450)
        at org.jboss.ejb.protocol.remote.EJBServerChannel$ReceiverImpl.handleMessage(EJBServerChannel.java:188)
        at org.jboss.remoting3.remote.RemoteConnectionChannel.lambda$handleMessageData$3(RemoteConnectionChannel.java:430)
        at org.jboss.remoting3.EndpointImpl$TrackingExecutor.lambda$execute$0(EndpointImpl.java:926)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)