Block/Freeze when sending packet about arduino-lora HOT 9 CLOSED

#include "GSM_MQTT.h"
#include <SoftwareSerial.h>
#include <SPI.h>
#include <LoRa.h>

SoftwareSerial mySerial(2, 3); // RX, TX

//String MQTT_HOST = "m10.cloudmqtt.com";
//String MQTT_PORT = "12385";

String MQTT_HOST = "178.62.119.199";
String MQTT_PORT = "1883";

void setLoraTX() {
  digitalWrite(8, LOW);  //TxEN
  digitalWrite(7, LOW); //RxEN
  delay(100);
  digitalWrite(8, HIGH);  //TxEN
  digitalWrite(7, LOW); //RxEN
}

void setLoraRX() {
  digitalWrite(8, LOW);  //TxEN
  digitalWrite(7, LOW); //RxEN
  delay(100);
  digitalWrite(8, LOW);  //TxEN
  digitalWrite(7, HIGH); //RxEN
}

void GSM_MQTT::AutoConnect(void) {
  //(ClientIdentifier,UserNameFlag,PasswordFlag,UserName,Password,CleanSession,WillFlag,WillQoS,WillRetain,WillTopic,WillTopic)
  connect("GSM800L01", 1, 1, "admin", "admin", 1, 0, 0, 0, "", "");
  //connect("GSM800L02", 1, 1, "ihyoofdv", "__UzGYSOaNN8", 1, 0, 0, 0, "", "");
}

void GSM_MQTT::OnConnect(void) {
  //subscribe(0, _generateMessageID(), "SampleTopic", 1);
  //subscribe(0, _generateMessageID(), "boat/001/message_operator", 1); //(DUP,Message ID,SubTopic,SubQoS)
  subscribe(0, _generateMessageID(), "boat/002/message_operator", 1);
  //publish(0, 0, 0, _generateMessageID(), "SampleTopic", "Hello"); //(DUP,QoS RETAIN,Message ID,Topic,Message)
}

void GSM_MQTT::OnMessage(char *Topic, int TopicLength, char *Message, int MessageLength) {
  digitalWrite(5, HIGH);
  delay(30);
  digitalWrite(5, LOW);
  setLoraTX();
  String payload2Send = "002";
  payload2Send += (String)Message;
  sendMessage(payload2Send);
  setLoraRX();
  //LoRa.receive();

  //  mySerial.println("LoRa sent!");
  //
  //  mySerial.println(TopicLength);
  //  mySerial.println(Topic);
  //  mySerial.println(MessageLength);
  //  mySerial.println(Message);
  bip(1,100);
}

GSM_MQTT MQTT(100); //20 is the keepalive duration in seconds

void setup() {
  pinMode(8, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(5, OUTPUT);
  setLoraRX();
  delay(100);
  MQTT.begin();
  LoRa.setPins(10, 9, 30);
  LoRa.setSpreadingFactor(12);
  LoRa.enableCrc();
  //LoRa.setTxPower(30);
  if (!LoRa.begin(868E6)) {
    mySerial.println("Starting LoRa failed!");
    while (1);
  }
  LoRa.receive();
  LoRa.onReceive(onReceive);
}


void sendMessage(String outgoing) {
  bip(2,200);
  delay(550);
  LoRa.beginPacket();                   // start packet
  bip(3,300);
  LoRa.print(outgoing);                 // add payload
  bip(4,400);
  LoRa.endPacket();                     // finish packet and send it
  delay(550);
  //  delay(200);
  //  LoRa.beginPacket();                   // start packet
  //  LoRa.print(outgoing);                 // add payload
  //  LoRa.endPacket();                     // finish packet and send it
  //  delay(200);
  //  LoRa.beginPacket();                   // start packet
  //  LoRa.print(outgoing);                 // add payload
  //  LoRa.endPacket();                     // finish packet and send it

  bip(10,50);
}


//unsigned long previousMilliss = 0;
//const long interval = 2000;

void bip(int bips, int duration) {
  for (int i = 0; i < bips; i++) {
    digitalWrite(5, HIGH);
    delay(duration);
    digitalWrite(5, LOW);
    delay(duration);
  }
}

void loop() {
  //unsigned long currentMillis = millis();
  //onReceive(LoRa.parsePacket());
  if (MQTT.available())
  {
    onReceive(LoRa.parsePacket());
  }
  MQTT.processing();
  delay(1);
  yield();
}

void onReceive(int packetSize) {
  if (packetSize == 0) return;
  if (packetSize) {
    //Serial.print("Received packet '");
    String RSSIvalue = String(LoRa.packetRssi());
    String SNR = String(LoRa.packetSnr());
    String rcvdPayload = "";
    while (LoRa.available()) {
      rcvdPayload += (char)LoRa.read();
    }
    rcvdPayload += "/";
    rcvdPayload += RSSIvalue;
    rcvdPayload += "/";
    rcvdPayload += SNR;

    char payload[50];
    rcvdPayload.toCharArray(payload, (rcvdPayload.length() + 1));

    if (payload[0] == '0' && payload[1] == '0' && payload[2] == '1' && payload[4] != 'M' && payload[4] != 'P') MQTT.publish(0, 0, 0, "lora1", "boat/001/location", payload);
    if (payload[0] == '0' && payload[1] == '0' && payload[2] == '1' && payload[4] == 'P') MQTT.publish(0, 0, 0, "lora1", "boat/001/distress", payload);

    if (payload[0] == '0' && payload[1] == '0' && payload[2] == '2') MQTT.publish(0, 0, 0, "lora1", "boat/002/location", payload);
    if (payload[0] == '0' && payload[1] == '0' && payload[2] == '2' && payload[4] == 'M') MQTT.publish(0, 0, 0, "lora1", "boat/002/message_boat", payload);
    if (payload[0] == '0' && payload[1] == '0' && payload[2] == '2' && payload[4] == 'P' && payload[5] != '0') MQTT.publish(0, 0, 0, "lora1", "boat/002/distress", payload);
    if (payload[0] == '0' && payload[1] == '0' && payload[2] == '2' && payload[4] == 'P' && payload[5] == '0' && payload[6] == '0') MQTT.publish(0, 0, 0, "lora1", "boat/002/distress_end", "off");
  }
}