Can't acces Duck-dns with https://

Hi,
Iam having a problem with accessing thru https://.

iam getting the following error.

Log Details (ERROR)
Fri Jun 28 2019 10:50:58 GMT+0200 (Midden-Europese zomertijd)
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

can any one tell me what iam doing wrong.

Thank you

Have you forwarded the required ports in your router?

Does your ISP block any incoming ports?

Is your router’s public IP address correct on the duckDNS configuration page?

If not, does your ISP use CGNAT?

Are you trying to access HA from the duckDNS address or the IP address?

Are you trying to access HA from within your network or without (try a mobile phone with wifi turned off)?

If access from outside your network is ok but inside does not work, does your router support NAT loopback?

1 week ago it was all fine.
After installing hassio again I did not get it working.
Router is still the same.
I am trying to connect from outside of my own network. With my duckdns adres. I can connect over http but nut over https.

Config is the same as before

If you can connect via http then the duckDNS addon is either not configured to use SSL or is not set up correctly.

This is how i have made my config and addon.

In my config.

http:
  base_url: "https://myname.duckdns.org:8123"
  ssl_certificate: "/ssl/fullchain.pem"
  ssl_certificate: "/ssl/fullchain.pem"

In duckdns addon

{
  "lets_encrypt": {
    "accept_terms": true,
    "certfile": "fullchain.pem",
    "keyfile": "privkey.pem"
  },
  "token": "my token",
  "domains": [
    "Myname.duckdns.org"
  ],
  "seconds": 300
}
http:
  base_url: myname.duckdns.org:8123
  ssl_certificate: /ssl/fullchain.pem
  ssl_key: /ssl/privkey.pem