anchor.diff:  
   [source, clojure]
   ----
  -(defn my-error-hanlder
  +(defn my-error-handler
     [context error]
     (http/internal-server-error (.getMessage error)))
   ----
  
positive.code: 
  You can see the example code here: https://github.com/funcool/catacumba/tree/master/examples/debugging
  
  NOTE: Obviously, if you are using the ring type of hanlder, you can use prone as is, without any
  additional adaptation. This example shows how it can be used with default hanlder type.
  
  
  == FAQ
  
negative.code: The handler maybe looks very familiar if you are previously have used ring, the main difference
  is that it receives some kind of context object instead of request. And may return a string directly.
  
  All of related concepts and full introduction on how the handlers works are explained in below sections.
  
  
  === Run the server
  