Got an error while installing new UI theme shoreditch for civicrm?
I am not sure how CiviCRM will understand drush en to enable shoreditch extension. Shoreditch extension is under CiviCRM not under Drupal. But there is different drush command to install CiviCRM extensions


List CiviCRM extensions



  drush cel



Install CiviCRM extension



  drush cei org.civicrm.shoreditch



Disabled CiviCRM extension



  drush ced org.civicrm.shoreditch



Uninstall CiviCRM extension



  drush ceui org.civicrm.shoreditch


HTH

Pradeep