Can't connect Homeassistant but observer healthy

Configuration
1

Dear Communitiy,
I would like to move my home assistant. To do this, I made a full backup on the old system. I installed the new Homeassistant on a Proxmox. After setup, I used the “Restore Backup” link and also told my DHCP to give the HA the IP that the server used to have too (the old server is offline).
Now I can access the Observer via http://ip:4357, but I can’t access the web interface via http://ip:8123.

Can someone help me? How and where can I read logs on HA via ssh?

Thank you and best regards
Leo

Screen in der Shell

Observer

2

Does nobody have an idea? When I try to start Homeassistant via IP, the following error message appears in the core log (command ha core log):

2023-12-04 09:28:58.868 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/aiohttp/web_protocol.py", line 332, in data_received
    messages, upgraded, tail = self._request_parser.feed_data(data)
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "aiohttp/_http_parser.pyx", line 557, in aiohttp._http_parser.HttpParser.feed_data
aiohttp.http_exceptions.BadStatusLine: 400, message:
  Bad status line "Invalid method encountered:\n\n  b'\\x16\\x03\\x01\\x02:\\x01'\n    ^"
2023-12-04 09:28:58.872 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/aiohttp/web_protocol.py", line 332, in data_received
    messages, upgraded, tail = self._request_parser.feed_data(data)
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "aiohttp/_http_parser.pyx", line 557, in aiohttp._http_parser.HttpParser.feed_data
aiohttp.http_exceptions.BadStatusLine: 400, message:
  Bad status line "Invalid method encountered:\n\n  b'\\x16\\x03\\x01\\x02\\x1a\\x01'\n    ^"
2023-12-04 09:28:58.877 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/aiohttp/web_protocol.py", line 332, in data_received
    messages, upgraded, tail = self._request_parser.feed_data(data)
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "aiohttp/_http_parser.pyx", line 557, in aiohttp._http_parser.HttpParser.feed_data
aiohttp.http_exceptions.BadStatusLine: 400, message:
  Bad status line "Invalid method encountered:\n\n  b'\\x16\\x03\\x01\\x02:\\x01'\n    ^"
2023-12-04 09:28:58.880 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/aiohttp/web_protocol.py", line 332, in data_received
    messages, upgraded, tail = self._request_parser.feed_data(data)
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "aiohttp/_http_parser.pyx", line 557, in aiohttp._http_parser.HttpParser.feed_data
aiohttp.http_exceptions.BadStatusLine: 400, message:
  Bad status line "Invalid method encountered:\n\n  b'\\x16\\x03\\x01\\x02\\x1a\\x01'\n    ^"