Menssagem de erro

• User warning: The following module is missing from the file system: devel. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1184 of /var/aegir/platforms/drupal-7/includes/bootstrap.inc).
• User warning: The following module is missing from the file system: devel_generate. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1184 of /var/aegir/platforms/drupal-7/includes/bootstrap.inc).