Message d'erreur

• Warning : Cannot modify header information - headers already sent by (output started at /var/www/vhosts/maxeville.tv/httpdocs/includes/common.inc:2861) dans drupal_send_headers() (ligne 1551 dans /var/www/vhosts/maxeville.tv/httpdocs/includes/bootstrap.inc).
• Error : Call to undefined function mail() dans DefaultMailSystem->mail() (ligne 79 dans /var/www/vhosts/maxeville.tv/httpdocs/modules/system/system.mail.inc).