DB Error: Unknown column 'comment_state' in 'where clause'

Stack Trace:

File: /srv/openconference/eventos/www.enfermeria2017.sld.cu/classes/commentManager/CManagerDAO.inc.php line 35
Function: DAO->retrieve("SELECT * FROM comments WHERE comment_state='1' and parent_comm...")

File: /srv/openconference/eventos/www.enfermeria2017.sld.cu/pages/commentManager/CManagerHandler.inc.php line 30
Function: CManagerDAO->getRootComments()

File: /srv/openconference/eventos/www.enfermeria2017.sld.cu/lib/pkp/classes/core/PKPPageRouter.inc.php line 177
Function: CManagerHandler->index(Array(0), Object(Request))

File: /srv/openconference/eventos/www.enfermeria2017.sld.cu/lib/pkp/classes/core/Dispatcher.inc.php line 130
Function: PKPPageRouter->route(Object(Request))

File: /srv/openconference/eventos/www.enfermeria2017.sld.cu/lib/pkp/classes/core/PKPApplication.inc.php line 170
Function: Dispatcher->dispatch(Object(Request))

File: /srv/openconference/eventos/www.enfermeria2017.sld.cu/index.php line 65
Function: PKPApplication->execute()