roundcube receives but it doesn't send

[demo]

hello guys i have this problem what is the solution 

roundcube receives but it doesn't send emails

cat /var/zpanel/logs/roundcube/errors 

[18-Aug-2018 16:59:26 +0100]: DB Error: [1054] Unknown column 'expires' in 'where clause' (SQL Query: DELETE FROM cache WHERE expires < now()) in /etc/sentora/panel/etc/apps/webmail/program/lib/Roundcube/rcube_db.php on line 467 (POST /etc/apps/webmail/?_task=mail&_action=check-recent?_task=&_action=)

and thanks

[TGates]

hello guys i have this problem what is the solution 

roundcube receives but it doesn't send emails

cat /var/zpanel/logs/roundcube/errors 

[18-Aug-2018 16:59:26 +0100]: DB Error: [1054] Unknown column 'expires' in 'where clause' (SQL Query: DELETE FROM cache WHERE expires < now()) in /etc/sentora/panel/etc/apps/webmail/program/lib/Roundcube/rcube_db.php on line 467 (POST /etc/apps/webmail/?_task=mail&_action=check-recent?_task=&_action=)

and thanks

Did you upgrade rouncube? It seems your roundcube database is missing some entries.