old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  from flask import jsonify
  
  # TODO improve this exception by always providing an advice to solve the
  #   problem
  # TODO improve this excetion by always providing a context ???
  class LudoboxError(Exception):
      """Base class for all the custom exceptions of the module."""
  
      status_code = 400
  
      def __init__(self, message, status_code=None, payload=None):
          """Set the message for the exception."""
          Exception.__init__(self)
          self.message = message
          if status_code is not None:
              self.status_code = status_code
          self.payload = payload
  
      # Call the base class constructor with the parameters it needs
      def to_dict(self):
          rv = dict(self.payload or ())
          rv['message'] = self.message
          return rv
      # super(LudoboxError, self).__init__(message)
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  from flask import jsonify
  
  # TODO improve this exception by always providing an advice to solve the
  #   problem
  # TODO improve this excetion by always providing a context ???
  class LudoboxError(Exception):
      """Base class for all the custom exceptions of the module."""
  
      status_code = 400
  
      def __init__(self, message, status_code=None, payload=None):
          """Set the message for the exception."""
          Exception.__init__(self, message)
          self.message = message
          if status_code is not None:
              self.status_code = status_code
          self.payload = payload
  
      # Call the base class constructor with the parameters it needs
      def to_dict(self):
          rv = dict(self.payload or ())
          rv['message'] = self.message
          return rv
      # super(LudoboxError, self).__init__(message)
  
subject: fix error message display