TypeError: decoding to str: need a bytes-like object, NoneType found about xsser HOT 9 CLOSED

Traceback (most recent call last):
 File "xsser", line 35, in <module>
   app.run()
 File "/usr/share/xsser/core/main.py", line 2717, in run
   self.poll_workers()
 File "/usr/share/xsser/core/main.py", line 2234, in poll_workers
   self.pool.poll()
 File "/usr/share/xsser/core/threadpool.py", line 358, in poll
   request.callback(request, result)
 File "/usr/share/xsser/core/main.py", line 916, in _cb
   query_string, url, dest_url)
 File "/usr/share/xsser/core/main.py", line 1029, in finish_attack_url_payload
   if c.info()["http-code"] in ["200", "302", "301"]:
 File "/usr/share/xsser/core/curlcontrol.py", line 454, in info
   m['content-type'] = (self.handle.getinfo(pycurl.CONTENT_TYPE) or '').strip(';')
TypeError: decoding to str: need a bytes-like object, NoneType found

[Client Request]

Cookie: ASESSIONID=<...>
User Agent:<...>
Referer: <...>
Extra Headers: None
X-Forwarded-For: None
X-Client-IP: None
Authentication Type: None
Authentication Credentials: None
Proxy: None
Timeout: 30
Delaying: 0 seconds
Delaying: 0 seconds
Retries: 1

 [Server Reply]

http-code: 406
total-time: 1.172258
namelookup-time: 6.7e-05
connect-time: 1.0399
header-size: 564
request-size: 598
response-code: 406
cookielist: []

  File "xsser", line 36, in <module>
    app.land(True)

  File "D:\tool\xsser\core\main.py", line 2779, in land
    self.hub.shutdown()

  File "D:\tool\xsser\core\tokenhub.py", line 64, in shutdown
    self.socket.shutdown(socket.SHUT_RDWR)

OSError: [WinError 10057] A request to send or receive data was disallowed because the socket is not connected  and (when sending on a datagram socket using a sendto call) no address was supplied```