Failed to get tracing message

I enabled message tracing on the CamelContext.

I dropped the following file in the src/data folder

<?xml version="1.0" encoding="UTF-8"?>
<person user="hiram">
  <firstName>Claus</firstName>
  <lastName>Ibsen</lastName>
  <city>Copenhagen</city>
</person>

To see this message being traced. But I got this error dialog when clicking in the JMX Explorer tree. (see screenshot)