[System Test][System Event Logs]Backup service - error "timestamp":"The value must be a valid ISO 8601 UTC" observed

2021-10-14T04:02:23.164-07:00 INFO (HTTP Manager) Added plan {"name": "my_plan"}

2021-10-14T04:02:23.164-07:00 DEBUG (REST) (Attempt 1) (POST) Dispatching request to 'http://172.23.120.74:8091/_event'

2021-10-14T04:02:23.165-07:00 DEBUG (REST) (Attempt 1) (POST) (400) Received response from 'http://172.23.120.74:8091/_event'

2021-10-14T04:02:23.165-07:00 WARN (REST) (Attempt 1) (POST) Request to endpoint '/_event' failed with status code 400

2021-10-14T04:02:23.165-07:00 ERROR (elutil) Failed to report event 'elutil.Event{Component:"backup", Severity:"info", EventID:0x1801, Description:"A new plan was created", ExtraAttributes:map[string]interface {}{"name":"my_plan"}, SubComponent:""}' due to error 'unexpected status code 400 for 'POST' request to '/_event', {"errors":{"timestamp":"The value must be a valid ISO 8601 UTC"}}'

2021-10-14T04:02:28.790-07:00 INFO (REST) POST /api/v1/cluster/self/repository/active/my_repo

2021-10-14T04:02:28.804-07:00 INFO (GRPC Manager) Global storage location check {"req": "location:\"/data/archive/.cbbs-6c781164db5b9e35bb697e3f0a9a8e03/node-b28ca7e04496c3e8b074d9e4149139d7-1634209348798784420\"  sourceNode:\"b28ca7e04496c3e8b074d9e4149139d7\""}

2021-10-14T04:02:28.809-07:00 INFO (Runner) Running command /opt/couchbase/bin/cbbackupmgr config -a /data/archive -r 3ded8fe6-6a52-4f0d-baf9-ced55cecff5b --cbbs --readme-author Backup Service, cluster: 6c781164db5b9e35bb697e3f0a9a8e03 --disable-views --disable-ft-indexes --disable-ft-alias --disable-eventing --disable-analytics --disable-cluster-analytics

2021-10-14T04:02:28.853-07:00 DEBUG (Leader Manager) Received store event {"eventType": 4}

2021-10-14T04:02:28.853-07:00 INFO (Event Handler) (Repo Change) Repository change {"event": {"Type":4,"Path":"/cbbs/cluster/self/active/my_repo","Value":"eyJpZCI6Im15X3JlcG8iLCJwbGFuX25hbWUiOiJteV9wbGFuIiwic3RhdGUiOiJhY3RpdmUiLCJhcmNoaXZlIjoiL2RhdGEvYXJjaGl2ZSIsInJlcG8iOiIzZGVkOGZlNi02YTUyLTRmMGQtYmFmOS1jZWQ1NWNlY2ZmNWIiLCJ2ZXJzaW9uIjoxLCJjcmVhdGlvbl90aW1lIjoiMjAyMS0xMC0xNFQwNDowMjoyOC44NDI4NzAxNzYtMDc6MDAiLCJ1cGRhdGVfdGltZSI6IjIwMjEtMTAtMTRUMDQ6MDI6MjguODQyODcwMTc2LTA3OjAwIn0=","Rev":"g2gCbgUAeobc2g5sAAAAAWgCbQAAACBiMjhjYTdlMDQ0OTZjM2U4YjA3NGQ5ZTQxNDkxMzlkN2gCYQFuBQBEitzaDmo="}}

2021-10-14T04:02:28.854-07:00 INFO (Event Handler) (Repo Change) Resuming repository {"repositoryID": "my_repo", "planName": "my_plan"}

2021-10-14T04:02:28.857-07:00 INFO (Manger) Added repository {"id": "my_repo", "cluster": "self", "archive": "/data/archive", "repo": "3ded8fe6-6a52-4f0d-baf9-ced55cecff5b", "plan": "my_plan"}

2021-10-14T04:02:28.857-07:00 DEBUG (REST) (Attempt 1) (POST) Dispatching request to 'http://172.23.120.74:8091/_event'

2021-10-14T04:02:28.858-07:00 INFO (ClockKeeper) Adding job {"cluster": "self", "repository": "my_repo", "task": "backup-1"}

2021-10-14T04:02:28.859-07:00 DEBUG (REST) (Attempt 1) (POST) (400) Received response from 'http://172.23.120.74:8091/_event'

2021-10-14T04:02:28.859-07:00 WARN (REST) (Attempt 1) (POST) Request to endpoint '/_event' failed with status code 400

2021-10-14T04:02:28.859-07:00 ERROR (elutil) Failed to report event 'elutil.Event{Component:"backup", Severity:"info", EventID:0x1807, Description:"A new repository has been created", ExtraAttributes:map[string]interface {}{"cluster":"self", "name":"my_repo", "plan":"my_plan"}, SubComponent:""}' due to error 'unexpected status code 400 for 'POST' request to '/_event', {"errors":{"timestamp":"The value must be a valid ISO 8601 UTC"}}'

2021-10-14T04:02:28.899-07:00 INFO (ClockKeeper) Adding job {"cluster": "self", "repository": "my_repo", "task": "merge"}