Error message

User warning: The following module is missing from the file system: pantheon. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /mnt/stor7-wc1-dfw1/385641/1003268/www.foodlabels.com/web/content/includes/bootstrap.inc).
"We would like to thank you for all your efforts and hard work with getting our labels to us in such a short time. You were such a great help and so easy to work with. You went above and beyond the call of duty in order to get us what we required. Again thanks so much."
Gary Suhr
Owner