I am creating class for connect and send the data throw mqtt. when the qos 0 or 1, it works fine. but in qos 2, its not send the data.

`from paho.mqtt import client as mqtt

class MqttClient:
“”” Manage connection “””

def __init__(self, clientId, port, ip) -> None:
    self.clientId = clientId
    self.port = port
    self.broker = ip
    self.connect()

def connect(self):
    """ Connects to an mqtt client """
    client = mqtt.Client(client_id=self.clientId)
    client.connect(self.broker, self.port)
    self._client = client

def pub(self, topic: str, payload: str):
    self.client.publish(topic, payload, qos=2)

def disconnect(self):
    self.client.disconnect()

@property
def client(self):
    return self._client

`

this is my class. I send the data and check by mqtt explorer. qos 0 or 1 data recived, but not in 2