HA don't use SSL

Configuration
1

I use hass.io. I have own domain and I installed Letsencrypt add-on and it successful created files to /ssl -directory.
At configuration.yaml file I have:

 http:
   ssl_certificate: /ssl/fullchain.pem
   ssl_key: /ssl/privkey.pem
   ip_ban_enabled: True
   login_attempts_threshold: 3

System has been rebooted (several times) but is still “answering” to http and not https.
If I try to open https connection, I get errors to the log:

2019-12-03 22:08:55 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
2019-12-03 22:08:55 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
2

Did you set your base_url?

3

Earlier I tried that too… Same result.

4

Finally! I found out what was wrong…
At configuration.yaml file I had ONE space character before http: entry (like ’ http:’)
Configuration checker showed green light and didn’t say anything.