error xmin from before relfrozenxid

[watcher <watcher@xxxxxxxxx>]

Good time of a day.

I have this error repeating many times in log
2019-01-31 11:52:04 MSK [17175-1] ERROR:  found xmin 226149691 from 
before relfrozenxid 1949987637
2019-01-31 11:52:04 MSK [17175-2] CONTEXT:  automatic vacuum of table 
"statistics.pg_catalog.pg_auth_members"
Postgresql 9.6.9

Who can help to fix it?