Error message

• User warning: The following module is missing from the file system: slick_views. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/vhosts/aviontics.co.uk/httpdocs/includes/bootstrap.inc).
• User warning: The following module is missing from the file system: slick_example. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/vhosts/aviontics.co.uk/httpdocs/includes/bootstrap.inc).