Long deplay will cause error

When I edit the py code, When i change the num_fragment to 0.1, it throws out the following runtime.
(when 0.01, everything is ok except GFW send RESET)

TypeError('str, bytes or bytearray expected, not NoneType')
TypeError('str, bytes or bytearray expected, not NoneType')
SSLError(MaxRetryError("HTTPSConnectionPool(host='dns.electrotm.org', port=443): Max retries exceeded with url: /dns-query?dns=qr4BAAABAAAAAAAABmJ1MjAyMQN4eXoAAAEAAQ&type=A&ct=application%2Fdns-message (Caused by SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)')))"))
TypeError('str, bytes or bytearray expected, not NoneType')
Traceback (most recent call last):
  File "D:\APPS\unVPNedLadder\gfw_resist_HTTPS_proxy\pyprox_HTTPS_v1.0.py", line 464, in <module>
    ThreadedServer('',listen_PORT).listen()
  File "D:\APPS\unVPNedLadder\gfw_resist_HTTPS_proxy\pyprox_HTTPS_v1.0.py", line 220, in listen
    client_sock , client_addr = self.sock.accept()
  File "D:\APPS\Python3\lib\socket.py", line 292, in accept

When I change it back, it runs again but GFW in china send RESET.