Error message

• User warning: The following module is missing from the file system: checklistapi. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1156 of /var/www/html/includes/bootstrap.inc).
• User warning: The following module is missing from the file system: multiupload_filefield_widget. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1156 of /var/www/html/includes/bootstrap.inc).