publish not send,but no error show

[Tea-NT]

Hi, I am appreciate your Project ,so I want do some contribution, to feedback some question I meet.
I git clone this project to control my ESP8266 board,
if only use mqtt.onData event,it work fine,
but I add a publish call in onData function, the publish not send, other Subscriber can not receive which topic publish. the board also not jump exception.

and the mqtt.onPublish function also not call, I am confused with this, am i use wrong?

  mqtt.onData([](String topic, String data, bool cont) {
    Serial.printf("Data received, topic: %s, data: %s\r\n", topic.c_str(), data.c_str());
    //mqtt.unSubscribe("/qos0");
    Serial.printf("%s \r\n", data.c_str());
    if (data.compareTo("1") == 0 || data.compareTo("ON") == 0)
    {
      digitalWrite(PIN_RELAY1, HIGH );
      digitalWrite(PIN_RELAY2, HIGH );
      mqtt.publish("homeassistant/switch/irrigation/state", "ON", 0, 0); //**actually not work**
      //mqtt.publish("123", "ON", 0, 0);
      digitalWrite(LED_BUILTIN, LOW); //LED ON
      //delay(200);

    }
    //delay(1000); //delay 1 second
    if (data.compareTo("0") == 0 || data.compareTo("OFF") == 0)
    {
      digitalWrite(PIN_RELAY1, LOW );
      digitalWrite(PIN_RELAY2, LOW );
      mqtt.publish("homeassistant/switch/irrigation/state", "OFF", 0, 0); // **actually not work**
      //mqtt.publish("123", "OFF" , 0, 0);
      digitalWrite(LED_BUILTIN, HIGH); //LED OUT
    }
  });
  Serial.println("mqtt OnSub: ");
  mqtt.onSubscribe([](int sub_id) {
    Serial.printf("Subscribe topic id: %d ok\r\n", sub_id);
    mqtt.publish("/qos0", "qos0", 0, 0);                                           // **but this publish WORK FINE!   i am so confused** 
  });

  Serial.println("mqtt OnPub: ");
  mqtt.onPublish([](int pub_id) {                                                   //**this function never call, i don't know why**
    Serial.printf("onPublish return id: %d \r\n", pub_id);
  });

So i use another esp8266 mqtt client PubSubClient, and it work fine.

void callback(char* topic, byte* payload, unsigned int length) {//call back function with PubSubClient
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  String s = "";
  for (int i = 0; i < length; i++) {
    s = s + (char)payload[i];
  }
  Serial.println(s);
  // Switch on the LED if an 1 was received as first character
  if (s == "ON") {
    digitalWrite(LED_BUILTIN, LOW);   // Turn the LED on (Note that LOW is the voltage level
    // but actually the LED is on; this is because
    // it is active low on the ESP-01)
    client.publish("homeassistant/switch/irrigation/state", (char*)s.c_str());
  } else {
    digitalWrite(LED_BUILTIN, HIGH);  // Turn the LED off by making the voltage HIGH
    client.publish("homeassistant/switch/irrigation/state", (char*)s.c_str());
  }
}