Seafile server 6.2.0 beta is ready for testing!

I have upgraded my Seafile 6.1.2 → 6.2.0, everything was fine:

Updating seafile/seahub database …
[INFO] You are using SQLite3
Done
migrating avatars …
Done
updating /opt/seafile/seafile-server-latest symbolic link to /opt/seafile/seafile-server-6.2.0 …
Upgraded your seafile server successfully.

but when I have started seafile again I get this:

…/common/ccnet-db.c(142): Error exec query CREATE UNIQUE INDEX IF NOT EXISTS reference_id_index on EmailUser (reference_id): sqlite3_exec failed: table EmailUser has no column named reference_id.
failed to run “ccnet-server -t”

It looks like I am missing something… Can you help, please?