Error message

Notice: Undefined variable: uitpas_user in culturefeed_uitpas_user_register_cta_get() (line 13 of /var/www/vhosts/uitinlier.be/httpdocs/sites/all/modules/culturefeed/culturefeed_uitpas/includes/user_register.inc).
Notice: Trying to get property of non-object in culturefeed_uitpas_user_register_cta_get() (line 13 of /var/www/vhosts/uitinlier.be/httpdocs/sites/all/modules/culturefeed/culturefeed_uitpas/includes/user_register.inc).