WSO2 EI-服务编排示例错误

我目前正在尝试运行WSOEI的服务编排示例，如下链接所示：

对于本教程，我需要先运行3个其他教程

问题:

我成功地运行了所有3个必备教程，没有任何问题。然而，在服务编排示例中，我遇到了如下错误：

2021-05-31 17:19:50,523] ERROR {Axis2Sender} - {api:HealthcareAPI} Unexpected error during sending message out org.apache.axis2.AxisFault: The system cannot infer the transport information from the /healthcare/categories/surgery/reserve URL.
    at org.apache.axis2.description.ClientUtils.inferOutTransport(ClientUtils.java:86)
    at org.apache.synapse.core.axis2.DynamicAxisOperation$DynamicOperationClient.executeImpl(DynamicAxisOperation.java:116)
    at org.apache.axis2.client.OperationClient.execute(OperationClient.java:149)
    at org.apache.synapse.core.axis2.Axis2FlexibleMEPClient.send(Axis2FlexibleMEPClient.java:656)
    at org.apache.synapse.core.axis2.Axis2Sender.sendOn(Axis2Sender.java:86)
    at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:573)
    at org.apache.synapse.mediators.builtin.CallMediator.handleNonBlockingCall(CallMediator.java:275)
    at org.apache.synapse.mediators.builtin.CallMediator.mediate(CallMediator.java:122)
    at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:109)
    at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:71)
    at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:158)
    at org.apache.synapse.rest.Resource.process(Resource.java:331)
    at org.apache.synapse.rest.API.process(API.java:448)
    at org.apache.synapse.rest.RESTRequestHandler.apiProcess(RESTRequestHandler.java:120)
    at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:98)
    at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:71)
    at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:331)
    at org.apache.synapse.core.axis2.SynapseMessageReceiver.receive(SynapseMessageReceiver.java:99)
    at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
    at org.apache.synapse.transport.passthru.ServerWorker.processNonEntityEnclosingRESTHandler(ServerWorker.java:367)
    at org.apache.synapse.transport.passthru.ServerWorker.processEntityEnclosingRequest(ServerWorker.java:426)
    at org.apache.synapse.transport.passthru.ServerWorker.run(ServerWorker.java:181)
    at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

作为WSO2 EI的新手，对我来说，错误并不是真正描述其实际原因，因此我无法准确定位错误的来源。请就如何调试此提供建议

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谢谢

您是否可以发布调用端点的源代码？我想那可能更容易些。