IOError: [Errno 32] Broken pipe

Hi there,

I created a python UI with the dash but recently sometimes run into the following error message: - - [08/Jun/2020 00:18:52] code 400, message Bad request syntax ('\x05\x01\x00')
Exception happened during processing of request from ('', 36310)
Traceback (most recent call last):
  File "/usr/lib/python2.7/", line 596, in process_request_thread
    self.finish_request(request, client_address)
  File "/usr/lib/python2.7/", line 331, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/lib/python2.7/", line 652, in __init__
  File "/home/ubuntu/.local/lib/python2.7/site-packages/werkzeug/", line 345, in handle
  File "/usr/lib/python2.7/", line 340, in handle
  File "/home/ubuntu/.local/lib/python2.7/site-packages/werkzeug/", line 378, in handle_one_request
    elif self.parse_request():
  File "/usr/lib/python2.7/", line 286, in parse_request
    self.send_error(400, "Bad request syntax (%r)" % requestline)
  File "/usr/lib/python2.7/", line 384, in send_error
IOError: [Errno 32] Broken pipe

Moreover, the bad request always comes from the same above IP.

I am using dash 1.8.0.

Thanks for any insight into this issue.