Rebalance failed with pre_rebalance_janitor_run_failed

[ns_server:error,2019-06-23T14:01:32.943-07:00,ns_1@172.23.104.113:ns_doctor<0.9960.0>:ns_doctor:update_status:316]The following buckets became not ready on node 'ns_1@172.23.96.215': ["CUSTOMER",

                                                                      "DISTRICT",

                                                                      "HISTORY",

                                                                      "ITEM",

                                                                      "NEW_ORDER",

                                                                      "ORDERS",

                                                                      "ORDER_LINE",

                                                                      "STOCK",

                                                                      "WAREHOUSE",

                                                                      "default"], those of them are active []

[user:error,2019-06-23T14:05:20.427-07:00,ns_1@172.23.104.113:<0.5272.331>:ns_orchestrator:log_rebalance_completion:1426]Rebalance exited with reason {pre_rebalance_janitor_run_failed,"default",

                                 ['ns_1@172.23.96.215']}.

Rebalance Operation Id = ae4db9c7282a5a43e0792f80701d366a

[2019-06-23T14:05:07-07:00, sequoiatools/couchbase-cli:6.5:e0c50e] rebalance -c 172.23.97.74:8091 -u Administrator -p password

→  

Error occurred on container - sequoiatools/couchbase-cli:6.5:[rebalance -c 172.23.97.74:8091 -u Administrator -p password]

docker logs e0c50e

docker start e0c50e

*Unable to display progress bar on this os

JERROR: Rebalance failed. See logs for detailed reason. You can try again.

[2019-06-23T14:05:29-07:00, sequoiatools/cmd:c82cbf] 60