node-soap初始化报错：Cannot read properties of undefined (reading 'elements')

我在基于node-soap库搭建SOAP客户端时遇到初始化失败的问题，代码实现如下：

class DreamloveAdapter extends Adapter {
  soapClient: soap.Client | null = null;

  constructor(id: string) {
    super(id);
  }

  initialize = async () => {
    if (!process.env.DREAMLOVE_WEBSERVICE_URL)
      throw new Error("Missing DREAMLOVE_WEBSERVICE_URL env variable");

    try {
      this.soapClient = await soap.createClientAsync(
        "https://store.dreamlove.es/webservices/orderservice_wsdl.php"
      );
    } catch (error) {
      console.error(error);
      throw new Error("Error initialising Dreamlove adapter");
    }
  };
};

注：SOAP客户端会通过环境变量传入服务地址，已添加对应的缺失校验。

每当实例化该类并调用initialize方法时，都会触发以下错误：

TypeError: Cannot read properties of undefined (reading 'elements')
    at MessageElement.postProcess (webpack-internal:///(rsc)/./node_modules/soap/lib/wsdl/elements.js:530:35)
    at OperationElement.postProcess (webpack-internal:///(rsc)/./node_modules/soap/lib/wsdl/elements.js:776:21)
    at PortTypeElement.postProcess (webpack-internal:///(rsc)/./node_modules/soap/lib/wsdl/elements.js:815:19)
    at BindingElement.postProcess (webpack-internal:///(rsc)/./node_modules/soap/lib/wsdl/elements.js:858:22)
    at ServiceElement.postProcess (webpack-internal:///(rsc)/./node_modules/soap/lib/wsdl/elements.js:928:29)
    at eval (webpack-internal:///(rsc)/./node_modules/soap/lib/wsdl/index.js:84:44)
    at WSDL._processNextInclude (webpack-internal:///(rsc)/./node_modules/soap/lib/wsdl/index.js:1089:20)
    at WSDL.processIncludes (webpack-internal:///(rsc)/./node_modules/soap/lib/wsdl/index.js:140:14)
    at eval (webpack-internal:///(rsc)/./node_modules/soap/lib/wsdl/index.js:74:18)
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)

已完成的排查步骤：

• 排除Node.js版本问题：使用Node v20环境调用已知可用的WSDL时，代码可正常运行；
• 排除SSL问题：使用自签名证书搭建测试服务器后，问题依旧；
• 已联系服务方开发者，但对方无法定位问题原因。

我怀疑服务方提供的WSDL格式存在问题，但对SOAP/WSDL了解有限无法确认，希望能明确该错误的触发原因，以及针对该WSDL的解决方向。

内容的提问来源于stack exchange，提问作者Dominic Sore