Does any way to solve this problem?"A message sent on a datagram socket was larger than the internal message buffer "

I have tank project with RPi 4. My tasks are connect a camera and get that cam record from main pc, and movement control from main pc. I did these things by UDP. But I had a problem.

import cv2, socket, os
import time
import pygame
import pickle
import numpy as np
from threading import Thread
# PC
class Connection:
def __init__(self, s_ip, rpi_ip, port):
    self.sck = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    self.s_ip = s_ip
    self.c_ip = rpi_ip
    self.port = port
    
    self.sck.bind((s_ip, port))

def read_image(self):
    sizedata, addr = self.sck.recvfrom(4)
    size = int.from_bytes(sizedata, 'little')
    data, addr = self.sck.recvfrom(size)
    print(size)
    data = pickle.loads(data)
    return cv2.imdecode(data, cv2.IMREAD_COLOR)
    
def send_command(self, cmd):
    self.sck.sendto(cmd, (self.c_ip, self.port))


def render(conn):
while True:
    img = conn.read_image()
    cv2.imshow('server', img)
    if cv2.waitKey(10) == 13:
        break

cv2.destroyAllWindows()

###################################################################

#                  pc ip      rpi ip    port
conn = Connection('10.20.50.142', '10.20.50.13', 6666)
render_thread = Thread(target=render, args=(conn,))

render_thread.start()
screen = pygame.display.set_mode([600, 450])

while True:
for event in pygame.event.get():
    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_UP: conn.send_command(b'K_UP')
        elif event.key == pygame.K_DOWN : conn.send_command(b'K_DN')
        elif event.key == pygame.K_RIGHT: conn.send_command(b'K_RT')
        elif event.key == pygame.K_LEFT: conn.send_command(b'K_LT')
        elif event.key == pygame.K_q: conn.send_command(b'SHUT')
    elif event.type == pygame.KEYUP: conn.send_command(b'STOP')
    break

after this code I got that message. [WinError 10040] A message sent on a datagram socket was larger than the internal message buffer or some other network limit, or the buffer used to receive a datagram into was smaller than the datagram itsel.

If I explain , I connect to my main pc and after about 5 second cam window is suddenly closed and I got above message from terminal. Could you help me about this problem?