title: How to handle "Couldn't get any response" in mule?
body: <p>I am trying to implement proper error handling in my code. There is a request component, which hits a specific api. I have to handle the scenario, where "<strong>server couldn't send a response</strong>" exception occurs.
  Mule does not identify it as a <strong>HTTP:NOT FOUND</strong> error instead it identifies it as <strong>MULE:UNKNOWN</strong>.
  How should I handle this case ? I want mule to identify it as a HTTP error.</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>How do I handle the MULE:UNKNOWN error type. I dont want to handle it under ANY and the compiler doesn't accept the type MULE : UNKNOWN. ?</p>
  
  <blockquote>
    <p>org.mule.runtime.deployment.model.api.DeploymentException: Failed to
    deploy artifact [] Caused by:
    org.mule.runtime.api.exception.MuleRuntimeException:
    org.mule.runtime.deployment.model.api.DeploymentInitException:
    MuleRuntimeException: Could not find ErrorType for the given
    identifier: 'MULE:UNKNOWN' Caused by:
    org.mule.runtime.deployment.model.api.DeploymentInitException:
    MuleRuntimeException: Could not find ErrorType for the given
    identifier: 'MULE:UNKNOWN' Caused by:
    org.mule.runtime.core.api.config.ConfigurationException: Could not
    find ErrorType for the given identifier: 'MULE:UNKNOWN' Caused by:
    org.mule.runtime.api.lifecycle.InitialisationException: Could not find
    ErrorType for the given identifier: 'MULE:UNKNOWN' Caused by:
    org.mule.runtime.api.lifecycle.LifecycleException: Could not find
    ErrorType for the given identifier: 'MULE:UNKNOWN' Caused by:
    org.mule.runtime.api.exception.MuleRuntimeException: Could not find
    ErrorType for the given identifier: 'MULE:UNKNOWN'</p>
  </blockquote>