Sudden connection issue to Hasssio

Hassio had been working fine without any problems for about 60 days now and today all of a sudden I can’t connect to the interface anymore.
This is what I am getting

and if I try incognito I get a “ERR_CONNECTION_CLOSED” message

Any reasons why this could be and what to do about it? I tried SSH to send a command to restart but it won’t connect either.