Failure in initialisation: java.lang.NullPointerException at org.apache.activemq.artemis.core.server.impl.SharedStoreBackupActivation$FailbackChecker.

Facing issue of NPE when implementing master/salve.

artemis_master.log

^{artemis-slave.log}

^{When the master is shutdown,  slave broker is able to process the messages but there is some NPE experience at the slave side.}

^{When the master goes up, there is a connection failure issue at the slave side..}

^{Please review attached logs for reference.}