Failed to Find common world

[myzrabit1]

Server work normally, but in logs i was fond this:

TRACE : gamed(200):: OnAbortSession 0
info : logclienttcp: OnAddSession
TRACE : gamed(200):: OnAbortSession 0
TRACE : gamed(200):: OnAbortSession 0
TRACE : gamed(200):: OnAbortSession 0
TRACE : gamed(200):: OnAbortSession 0
TRACE : gamed(200):: OnAbortSession 0
TRACE : gamed(200):: OnAbortSession 0
TRACE : gamed(200):: OnAddSession 16
TRACE : GProviderClient::OnAddSession, sid=16, lineid=200, name=ё±±ѕПЯ, pksetting=0
TRACE : add add session
TRACE : gamed(200):: OnAddSession 18
TRACE : GProviderClient::OnAddSession, sid=18, lineid=200, name=ё±±ѕПЯ, pksetting=0
TRACE : add add session
info : logclient: OnAddSession
TRACE : gdeliveryd: announcepid received, id 200, attr 1, lineid 200, namesize 6, attrsize 4, edition.size 27
TRACE : gdeliveryserver::gameserver 200
info : OnAddSession
TRACE : add add connect
Failed to Find common world 1
Failed to Find common world 2
Failed to Find common world 3
Failed to Find common world 4
Failed to Find common world 5
Failed to Find common world 6
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Failed to Find common world 800


What is it?