I have the same issue! Please help, the server is down and with it my client websites.
The panel is loading, but not logging in.
The ports are open, bt status is OK.
When I inspect the login page, I get this error:
'Uncaught SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON
at JSON.parse (<anonymous>)
at xhr.onreadystatechange (e185b4eb:891:25)"
What to do now?