title: The message wasn't mapped in Eclipse Vorto Semantic Normalizer middleware
body: <p>I'm flowing <a href="https://github.com/eclipse/vorto/blob/development/docs/tutorials/create_mapping_pipeline.md" rel="nofollow noreferrer">this link</a>, all is OK before step 3.4. But when I use this <code>mosquitto_pub</code> command to publish the message to the Bosch IOT hub. </p>
  
  <pre><code>mosquitto_pub -h mqtt.bosch-iot-hub.com -p 8883 -u 4712@t65a6a75c6b4f429981ba16d1b3d5f414 -P secret -t telemetry/t65a6a75c6b4f429981ba16d1b3d5f414/4712 -m '"103.3223","3.2322"' --cafile iothub.crt 
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/l2SPN.png" alt="The Normalizer Frontend shows the message I published."></p>
  
  <p>But the output log didn't have any message like the <a href="https://github.com/eclipse/vorto/blob/development/docs/tutorials/create_mapping_pipeline.md" rel="nofollow noreferrer">tutorial</a></p>
  
  <p><img src="https://i.stack.imgur.com/jginI.png" alt="and none error message."></p>
  
  <p><img src="https://i.stack.imgur.com/zKbTL.png" alt="The mapping_specs have added."></p>
  
  <p><img src="https://i.stack.imgur.com/OLYaQ.png" alt="And all the plugins are inactive."></p>
  
  <p>Why? What's the problem?</p>