Problem starting HA since docker update

Just updated my docker image (homeassistant/home-assistant) to the latest version and first it was telling me my SSL config was wrong - but it hasn’t changed since the update and it was working before the update. After temporarily disabling SSL, I still can’t access HA.

Whenever I try to login it gives me the following error:

2023-12-24 10:33:14.879 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/aiohttp/", line 350, in data_received
    messages, upgraded, tail = self._request_parser.feed_data(data)
  File "aiohttp/_http_parser.pyx", line 557, in aiohttp._http_parser.HttpParser.feed_data
aiohttp.http_exceptions.BadStatusLine: 400, message:
  Invalid method encountered:


Is this something to do with the update perhaps?

Running docker 24.0.7 on Ubuntu 22.04.3 LTS