Delivery Shipment Integration : Shipment throwing default error

     

I have integrated Delivery Shipment provider. On shipping charge calculation it throws the default error i have given in the config.xml default error throwing


  use MagentoQuoteModelQuoteAddressRateRequest;  use MagentoShippingModelRateResult;  use MagentoFrameworkXmlSecurity;  use MagentoUpsHelperConfig;
class Delhivery extends MagentoShippingModelCarrierAbstractCarrierOnline implements   MagentoShippingModelCarrierCarrierInterface  {
/**   * @var string   */   protected $_code = 'delhivery';   protected $_rateResultFactory;   protected $_rateMethodFactory;   //protected $_result;
/**   * @param MagentoFrameworkAppConfigScopeConfigInterface $scopeConfig   * @param MagentoQuoteModelQuoteAddressRateResultErrorFactory $rateErrorFactory   * @param PsrLogLoggerInterface $logger   * @param Security $xmlSecurity   * @param MagentoShippingModelSimplexmlElementFactory $xmlElFactory   * @param MagentoShippingModelRateResultFactory $rateResultFactory   * @param MagentoQuoteModelQuoteAddressRateResultMethodFactory $rateMethodFactory   * @param MagentoShippingModelTrackingResultFactory $trackFactory   * @param MagentoShippingModelTrackingResultErrorFactory $trackErrorFactory   * @param MagentoShippingModelTrackingResultStatusFactory $trackStatusFactory   * @param MagentoDirectoryModelRegionFactory $regionFactory   * @param MagentoDirectoryModelCountryFactory $countryFactory   * @param MagentoDirectoryModelCurrencyFactory $currencyFactory   * @param MagentoDirectoryHelperData $directoryData   * @param MagentoCatalogInventoryApiStockRegistryInterface $stockRegistry   * @param MagentoFrameworkLocaleFormatInterface $localeFormat   * @param Config $configHelper   * @param array $data   *   * @SuppressWarnings(PHPMD.ExcessiveParameterList)   */   public function __construct(   MagentoFrameworkAppConfigScopeConfigInterface $scopeConfig   MagentoQuoteModelQuoteAddressRateResultErrorFactory $rateErrorFactory   PsrLogLoggerInterface $logger