How to Set Up Point-to-Point Communication Between Two LoRa-E5 Mini Modules?

Products & Technology LoRa
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45 
  int state = radio.begin(922.6, 125.0, 12, 5, 0x12, 13, 8, 1.7, 0);


  if (state == RADIOLIB_ERR_NONE) {
    Serial.println("radio.begin() success!");
  }
  else {
    Serial.print("failed, code ");
    Serial.println(state);
    errorBlink(4);                           // error [[ 4 ]]
  }

Does that mean there is an error where the LED flashes four times?