当更新到新版1.1.1后，后台自带的采集里面采集一直提示

[8] ErrorException in Gather.php line 229

未定义数组索引: serial

  case 'serialize':
                            $serialize=self::field_rule($rule_value,$html);
                            if($rule_value['serial']==$serialize){
                                $field[$rule_value['field']]=0;
                            }elseif($rule_value['over']==$serialize){
                                $field[$rule_value['field']]=1;
                            }else{
                                $field[$rule_value['field']]=0;
                            }
                            break;