Dates back to https://github.com/civicrm/civicrm-core/commit/
eda34f9b15c494715e8fc54f09b5ea4308d16b17#diff-8041069091a94b730ff8ad60bdd24042R70
(Mar 2018).
To recreate do a first name search & create a smart group from it
}
// Get Task name
- $modeValue = CRM_Contact_Form_Search::getModeValue($values['component_mode']);
+ $modeValue = CRM_Contact_Form_Search::getModeValue(CRM_Utils_Array::value('component_mode', $values, CRM_Contact_BAO_Query::MODE_CONTACTS));
$className = $modeValue['taskClassName'];
$taskList = $className::taskTitles();
$this->_task = CRM_Utils_Array::value('task', $values);