Invalid http method after reverting to http

Configuration
1

I realized that my certificate for https was expired then I tried to renew it but unfortunately I got some problem with letsencrypt. So I decided to revert to http until I work out that mess but I’m stil getting this message in my log:

2019-04-05 20:30:57 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_protocol.py", line 275, in data_received
    messages, upgraded, tail = self._request_parser.feed_data(data)
  File "aiohttp\_http_parser.pyx", line 523, in aiohttp._http_parser.HttpParser.feed_data
aiohttp.http_exceptions.BadStatusLine: invalid HTTP method

Coulf you help me understanding what is wrong?

Thank You

2

Browser caching?
Chrome is especially bad about trying to use secure https after you have some that once.

3

So does it mean that someone is trying to connect via https?

Anyway I cleared the cache of my browser (safari) but the message is still there…maybe some other connection…