How to use the pygdbmi.gdbcontroller.NoGdbProcessError function in pygdbmi

def read_mem(self, addr, rec=0):
        try:
            logging.debug(" [+] gdb.read addr [0x%x]: ... "% (addr))
            r = self.gdb.write("x/xw %#x" % addr, timeout_sec=self.internal_timeout)[1].get('payload').split('\\t')[1].replace("\\n","")    
            logging.debug(" [+] gdb.read addr [0x%x]: %s "% (addr, r))
            r = int(r,16)

            return r
        except (GdbTimeoutError,TypeError,ValueError,NoGdbProcessError,IndexError,AttributeError):
            if (rec == 0):
                logging.warning("Inconsistente GDB response. (GDB timeout or bad format). New try.")
                self.read_mem(addr, rec=1)
            else:
                logging.warning("Inconsistente GDB response. (GDB timeout or bad format). Quit")
                self.stop()
                raise Exception("GDB timeout reached. Quit")

def read_and_forward_gdb_output():
    """A task that runs on a different thread, and emits websocket messages
    of gdb responses"""

    while True:
        socketio.sleep(0.05)
        controllers_to_remove = []
        controller_items = _state.controller_to_client_ids.items()
        for controller, client_ids in controller_items:
            try:
                try:
                    response = controller.get_gdb_response(
                        timeout_sec=0, raise_error_on_timeout=False
                    )
                except NoGdbProcessError:
                    response = None
                    send_msg_to_clients(
                        client_ids,
                        "The underlying gdb process has been killed. This tab will no longer function as expected.",
                        error=True,
                    )
                    controllers_to_remove.append(controller)

                if response:
                    for client_id in client_ids:
                        logger.info(
                            "emiting message to websocket client id " + client_id
                        )
                        socketio.emit(
                            "gdb_response",
                            response,