I can't access the interface

Hello partners,

After a restart due to a power outage, it is impossible to access the interface through the local and external network. I attach the error:

2023-12-26 20:00:46.852 ERROR (MainThread) [homeassistant.setup] Error during setup of component http

File "/usr/src/homeassistant/homeassistant/components/http/__init__.py", line 428, in _create_ssl_context
    raise HomeAssistantError(
homeassistant.exceptions.HomeAssistantError: Could not use SSL certificate from /ssl/fullchain.pem: [SSL] PEM lib (_ssl.c:3905)