Messaggio di errore

Notice: Trying to access array offset on value of type null in _webform_client_form_rule_check() (linea 2079 di sites/all/modules/webform/webform.module).
Notice: Trying to access array offset on value of type null in _webform_client_form_rule_check() (linea 2079 di sites/all/modules/webform/webform.module).
Notice: Trying to access array offset on value of type null in _webform_client_form_rule_check() (linea 2079 di sites/all/modules/webform/webform.module).
Notice: Trying to access array offset on value of type null in _webform_client_form_rule_check() (linea 2079 di sites/all/modules/webform/webform.module).