Interesting… Just had to reload my Hassio as old one was becoming very unreliable and Duckdns installed perfectly first time, according to the log. However I can only get http not https connection! In the main log I get the following error when I try https:
Log Details (ERROR)
Thu Dec 27 2018 20:31:10 GMT+0000 (GMT)
Error handling request
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/aiohttp/web_protocol.py", line 242, 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