Error on Drupal 7

Error: Call to undefined method CRM_WebformCivirules_Trigger::getObjectName() in CRM_CivirulesConditions_Generic_HasTag->doesWorkWithTrigger() (line 194 of /var/www/production/web/sites/default/files/civicrm/ext/org.civicoop.civirules/CRM/CivirulesConditions/Generic/HasTag.php).