In the sentinel, after base backup completed saw the error db won't be able to sync due to missing required wals on master {"db": "bc4ad932", "keeper": "standby1", "requiredWAL": "0000000000000000", "olderMasterWAL": "000004D4000000D6"}.
However, after some time the replica did get built without this error automatically. Wondering is that a bug or something wrong with our set up/config?