Admin UI extension breaks contact summary if CiviMember extension is disabled
Contact summary results in fatal error if Admin UI extension is enabled and CiviMember extension is disabled.
Civi\API\Exception\NotImplementedException: API (Membership, get) does not exist (or the extension it belongs to is not enabled). in Civi\API\Request::create() (line 51 of /var/www/html/sites/all/modules/civicrm/Civi/API/Request.php).