I0514 10:27:34.557372       1 stats.go:136] "Error getting keys" err="empty key: \"\""
I0514 10:27:41.643119       1 stats.go:136] "Error getting keys" err="empty key: \"\""
I0514 10:28:56.335716       1 stats.go:136] "Error getting keys" err="empty key: \"\""
I0514 10:29:05.213783       1 stats.go:136] "Error getting keys" err="empty key: \"\""