How to change the measurement factor after import?

Question

1C-Bitrix

Hello, I want to update the coefficient of the unit of measurement after updating the import, but I get an error

Fatal error: Cannot redeclare customCatalogImportStep() (previously declared in /var/www/html/local/php_interface/init.php:161) in /var/www/html/local/php_interface/init.php on line 371
[ErrorException] E_COMPILE_ERROR
Cannot redeclare customCatalogImportStep() (previously declared in /var/www/html/local/php_interface/init.php:161) (0)
/var/www/html/local/php_interface/init.php:371

The code itself

function setRatio() {
    \Bitrix\Main\Loader::includeModule('sale');
    \Bitrix\Main\Loader::includeModule('catalog');
    \Bitrix\Main\Loader::includeModule('iblock');
    $arSelect = Array("ID", "PROPERTY_CML2_TRAITS", 'PROPERTY_TRANSPORTNAYA_UPAKOVKA', 'IBLOCK_ID');
    $arFilter = Array("IBLOCK_ID" => 18, "!PROPERTY_CML2_TRAITS" => false);
    $res = \CIBlockElement::GetList(Array(), $arFilter, false, false, $arSelect);
    $el = new CIBlockElement;

    while ($prod = $res->GetNextElement()) {
        $PRODUCT_ID = $prod->GetFields()['ID'];
        $value = $prod->GetProperty('CML2_TRAITS')['VALUE'];
        $keys = $prod->GetProperty('CML2_TRAITS')['DESCRIPTION'];
        $params = array_combine($keys, $value);
        $is_error = false;
        if (!empty($params['МинимальнаяУпаковкаНаименование']) && !empty($params['МинимальнаяУпаковкаКоличество'])) {
            $db_enum_list = CIBlockProperty::GetPropertyEnum("TRANSPORTNAYA_UPAKOVKA", Array(), Array("IBLOCK_ID" => 18, "VALUE" => $params['МинимальнаяУпаковкаНаименование']));





            if (!$PropID = $db_enum_list->GetNext()['ID']) {
                $ibpenum = new CIBlockPropertyEnum;
                if (!$PropID = $ibpenum->Add(Array('PROPERTY_ID' => '248', 'VALUE' => $params['МинимальнаяУпаковкаНаименование'])))
                    $is_error = true;
            }

            if (!$is_error) {
                if ($el->SetPropertyValuesEx($PRODUCT_ID, 18, array("MIN_UPAKOVKA" => $params['МинимальнаяУпаковкаКоличество'], "TRANSPORTNAYA_UPAKOVKA" => $PropID))) {



                    $newRatioValue = preg_replace("/[^0-9]/", '', $params['МинимальнаяУпаковкаКоличество']);


                    $db_measure = \CCatalogMeasureRatio::getList(array(), $arFilter = array('PRODUCT_ID' => $PRODUCT_ID), false, false);
                    if ($ar_measure = $db_measure->fetch()) {
                        $test = \CCatalogMeasureRatio::update($ar_measure['ID'], array("PRODUCT_ID" => $PRODUCT_ID, "RATIO" => $newRatioValue));
                    } else {
                        \CCatalogMeasureRatio::Add(
                            array(
                                "PRODUCT_ID" => $PRODUCT_ID,
                                "RATIO" => $newRatioValue
                            )
                        );
                    }
                }
            }
        } else {
            if ($el->SetPropertyValuesEx($PRODUCT_ID, 18, array("MIN_UPAKOVKA" => '', "TRANSPORTNAYA_UPAKOVKA" => ''))) {
                $newRatioValue = 0;
                $db_measure = \CCatalogMeasureRatio::getList(array(), $arFilter = array('PRODUCT_ID' => $PRODUCT_ID), false, false);
                if ($ar_measure = $db_measure->fetch()) {
                    $test = \CCatalogMeasureRatio::update($ar_measure['ID'], array("PRODUCT_ID" => $PRODUCT_ID, "RATIO" => $newRatioValue));
                } else {
                    \CCatalogMeasureRatio::Add(
                        array(
                            "PRODUCT_ID" => $PRODUCT_ID,
                            "RATIO" => $newRatioValue
                        )
                    );
                }
            }
        }
        if (!empty($params['МинимальнаяУпаковкаКоличество'])) {
            $el->SetPropertyValuesEx($PRODUCT_ID, 18, array("KOMPLEKTATSIYA_PERVICHNAYA_UPAKOVKA" => $params['МинимальнаяУпаковкаКоличество']));
        }

    }





}

AddEventHandler('catalog', 'OnSuccessCatalogImport1C', 'customCatalogImportStep');

function customCatalogImportStep()
{
    setRatio();
}