Ugrade from 2.1.0 to 3.0.3 failed

Now I'm trying to upgrade Mattermost Team Edition from 2.1.0 to 3.0.3 while referring to Upgrade Guide,
and I have this error when executing ./platform -upgrade_db_30

[2016/10/28 13:28:06 JST] [EROR] Failed to load team membership details=SqlTeamStore.GetMembers: store.sql_team.get_members.app_error, teamId=4dp98jsagiru8rbgqf3wehhh8o gorp: no fields [deleteat] in type TeamMember

I checked DB and found this is because there are no records on TeamMembers table.
How shoud I do to add any records to TeamMembers table?

Thanks a lot.