6.0.2 BP MB-32059: Panic in replication manager

2019-01-23T13:00:55.459-08:00 INFO GOXDCR.RemoteClusterChangeListener: Completed remoteClusterChangedCallback called on id = remoteCluster/EYaZs6-162MdFYreZjYF7oZiodxlOS5bVuWB2tsBiKw=

2019-01-23T13:00:55.459-08:00 INFO GOXDCR.AuditSvc: Successfully sent HELO command with userAgent=Goxdcr Audit. attributes={false 0}

2019-01-23T13:00:55.459-08:00 INFO GOXDCR.UILogSvc: It took 2.51e-07s to call writeUILog_async

2019-01-23T13:00:55.466-08:00 INFO GOXDCR.AdminPort: doCreateReplicationRequest

2019-01-23T13:00:55.468-08:00 INFO GOXDCR.AdminPort: Finished doCreateReplicationRequest call

panic: interface conversion: interface {} is nil, not string

goroutine 75 [running]:

github.com/couchbase/goxdcr/metadata.ReplicationSettingsMap.CloneAndRedact(0xc42622b4d0, 0xc42622b530)

        goproj/src/github.com/couchbase/goxdcr/metadata/replication_settings.go:530 +0x40f

github.com/couchbase/goxdcr/replication_manager.(*Adminport).doCreateReplicationRequest(0xc42012ccf0, 0xc421accc00, 0x0, 0x0, 0x0)

        goproj/src/github.com/couchbase/goxdcr/replication_manager/adminport.go:409 +0x298

github.com/couchbase/goxdcr/replication_manager.(*Adminport).handleRequest(0xc42012ccf0, 0xc421accc00, 0xc4278f31e0, 0xcc89a0, 0xc4278f31e0)

        goproj/src/github.com/couchbase/goxdcr/replication_manager/adminport.go:172 +0x1093

github.com/couchbase/goxdcr/replication_manager.(*Adminport).processRequest(0xc42012ccf0, 0xc427cda000, 0x1, 0x1, 0xd00000, 0xc427cda010)

        goproj/src/github.com/couchbase/goxdcr/replication_manager/adminport.go:136 +0xf5

github.com/couchbase/goxdcr/replication_manager.(*Adminport).(github.com/couchbase/goxdcr/replication_manager.processRequest)-fm(0xc427cda000, 0x1, 0x1, 0x1, 0x1)

        goproj/src/github.com/couchbase/goxdcr/replication_manager/adminport.go:69 +0x48

github.com/couchbase/goxdcr/gen_server.(*GenServer).run(0xc42012cd08)

        goproj/src/github.com/couchbase/goxdcr/gen_server/gen_server.go:104 +0x4a4

created by github.com/couchbase/goxdcr/gen_server.(*GenServer).Start_server

        goproj/src/github.com/couchbase/goxdcr/gen_server/gen_server.go:74 +0xba

[goport(/opt/couchbase/bin/goxdcr)] 2019/01/23 13:00:55 child process exited with status 2

2019-01-23T13:00:55.577-08:00 INFO GOXDCR.ReplMgr: GOMAXPROCS=4

2019-01-23T13:00:55.579-08:00 INFO GOXDCR.AuditSvc: Created audit service.

2019-01-23T13:00:55.579-08:00 INFO GOXDCR.UILogSvc: Created ui log service.

2019-01-23T13:00:55.582-08:00 INFO GOXDCR.RemClusterSvc: Agent remoteCluster/EYaZs6-162MdFYreZjYF7oZiodxlOS5bVuWB2tsBiKw= remote_cluster_C1-C2 started for cluster: d8398a9e06f32debccecfcbeccc300a2

2019-01-23T13:00:55.582-08:00 INFO GOXDCR.ReplSpecSvc: Cache has been initialized for ReplicationSpecService

2019-01-23T13:00:55.585-08:00 INFO GOXDCR.IntSettSvc: Internal settings not found. Using default values