Updates the Flask app with Error Handlers for different Error Codes

def _construct_error_handling(self):
        """
        Updates the Flask app with Error Handlers for different Error Codes
        """
        # Both path and method not present
        self._app.register_error_handler(404, ServiceErrorResponses.route_not_found)
        # Path is present, but method not allowed
        self._app.register_error_handler(405, ServiceErrorResponses.route_not_found)
        # Something went wrong
        self._app.register_error_handler(500, ServiceErrorResponses.lambda_failure_response)