Invalid Handshake

I recently switched from to Hassbian. Shortly after that I’ve been getting a lot of Invalid Handshake errors. I’m not sure how to troubleshoot this issue further. I’ve even reinstalled Hassbian a second time. Only thing I’ve done so far is copy over my YAML files. I’m running 0.67.1

Invalid handshake
Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.5/site-packages/websockets/", line 193, in read_http_request
    path, headers = yield from read_request(self.reader)
  File "/srv/homeassistant/lib/python3.5/site-packages/websockets/", line 85, in read_request
    raise ValueError("Unsupported HTTP version: %r" % version)
ValueError: Unsupported HTTP version: b'HTTP/1.0'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.5/site-packages/websockets/", line 88, in handler
  File "/srv/homeassistant/lib/python3.5/site-packages/websockets/", line 426, in handshake
    path, request_headers = yield from self.read_http_request()
  File "/srv/homeassistant/lib/python3.5/site-packages/websockets/", line 195, in read_http_request
    raise InvalidMessage("Malformed HTTP message") from exc
websockets.exceptions.InvalidMessage: Malformed HTTP message