Error handling request

Any thoughts on this issue:

Since this weekend, I got the following error:

Error handling request
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/aiohttp/", line 230, in data_received
    messages, upgraded, tail = self._request_parser.feed_data(data)
  File "aiohttp/_http_parser.pyx", line 297, in aiohttp._http_parser.HttpParser.feed_data
aiohttp.http_exceptions.BadStatusLine: invalid HTTP method

The major change what I have installed this weekend is:
Caddy Web Server, this to prevent my security level :slight_smile:

Any thoughts on this?