Socket error - return getattr(self._sock,name)(*args)

Question

I have this error when I try to run this on my server can you help me

error:

    line 228, in meth
    return getattr(self._sock,name)(*args)
TypeError: listen() takes exactly one argument (0 given)

This is my code:

import socket 
import threading

HEADER = 64
PORT = 2000
SERVER = socket.gethostbyname(socket.gethostname())
ADDR = (SERVER, PORT)
FORMAT = 'utf-8'
DISCONNECT_MESSAGE = "!DISCONNECT"

    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind(ADDR)

def handle_client(conn, addr):
connected = True
while connected:
    msg_length = conn.recv(HEADER).decode(FORMAT)
    if msg_length:
        msg_length = int(msg_length)
        msg = conn.recv(msg_length).decode(FORMAT)
        if msg == DISCONNECT_MESSAGE:
            connected = False

        conn.send("Msg received".encode(FORMAT))

conn.close()
    

def start():
server.listen()
while True:
    conn, addr = server.accept()
    thread = threading.Thread(target=handle_client, args=(conn, addr))
    thread.start()


print("[STARTING]")
start()