Error al clicar en la seccion de clientes del backoffice (Prestashop 1.7.7.3)

[RafaelPL]

Buenas tardes:

Cuando intento entrar en la seccion de clientes del Baskoffice sale este error:

An exception occurred while executing 'SELECT c.id_customer, c.firstname, c.lastname, c.email, c.active, c.newsletter, c.optin, c.date_add, gl.name as social_title, s.name as shop_name, c.company, (SELECT SUM(total_paid_real / conversion_rate) FROM ps_orders o WHERE (o.id_customer = c.id_customer) AND (o.id_shop IN (?)) AND (o.valid = 1)) as total_spent, (SELECT con.date_add FROM ps_guest g LEFT JOIN ps_connections con ON con.id_guest = g.id_guest WHERE g.id_customer = c.id_customer ORDER BY con.date_add DESC LIMIT 1) as connect FROM ps_customer c LEFT JOIN ps_gender_lang gl ON c.id_gender = gl.id_gender AND gl.id_lang = ? LEFT JOIN ps_shop s ON c.id_shop = s.id_shop WHERE (c.deleted = 0) AND (c.id_shop IN (?)) ORDER BY c.date_add DESC LIMIT 50' with params [1, 1, 1]: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'con.date_add' in 'field list'

[Doctrine\DBAL\Exception\InvalidFieldNameException 0]

 

Si alguien me puede ayudar para solucionar esto.

Gracias.