cf-remote doesn't try whoami username for ssh

> $ cf-remote info --hosts $(hostname)
Unknown exception: Raw
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/paramiko/transport.py", line 2083, in run
    self._handler_table[ptype](self, m)
  File "/usr/local/lib/python3.7/dist-packages/paramiko/transport.py", line 2199, in _negotiate_keys
    self.kex_engine.start_kex()
  File "/usr/local/lib/python3.7/dist-packages/paramiko/kex_curve25519.py", line 54, in start_kex
    serialization.Encoding.Raw, serialization.PublicFormat.Raw
  File "/usr/lib/python3.7/enum.py", line 349, in __getattr__
    raise AttributeError(name) from None
AttributeError: Raw

Traceback (most recent call last):
  File "/home/nickanderson/bin/cf-remote", line 11, in <module>
    main()
  File "/home/nickanderson/Northern.Tech/CFEngine/core/contrib/cf-remote/cf_remote/main.py", line 137, in main
    run_command_with_args(args.command, args)
  File "/home/nickanderson/Northern.Tech/CFEngine/core/contrib/cf-remote/cf_remote/main.py", line 44, in run_command_with_args
    commands.info(args.hosts, None)
  File "/home/nickanderson/Northern.Tech/CFEngine/core/contrib/cf-remote/cf_remote/commands.py", line 15, in info
    data = get_info(host, users=users)
  File "/home/nickanderson/Northern.Tech/CFEngine/core/contrib/cf-remote/cf_remote/ssh.py", line 39, in connect_wrapper
    with connect(host, users=kwargs.get("users")) as connection:
  File "/home/nickanderson/Northern.Tech/CFEngine/core/contrib/cf-remote/cf_remote/ssh.py", line 25, in connect
    c.run("whoami", hide=True)
  File "<decorator-gen-3>", line 2, in run
  File "/usr/local/lib/python3.7/dist-packages/fabric/connection.py", line 29, in opens
    self.open()
  File "/usr/local/lib/python3.7/dist-packages/fabric/connection.py", line 615, in open
    self.client.connect(**kwargs)
  File "/usr/local/lib/python3.7/dist-packages/paramiko/client.py", line 406, in connect
    t.start_client(timeout=timeout)
  File "/usr/local/lib/python3.7/dist-packages/paramiko/transport.py", line 660, in start_client
    raise e
  File "/usr/local/lib/python3.7/dist-packages/paramiko/transport.py", line 2083, in run
    self._handler_table[ptype](self, m)
  File "/usr/local/lib/python3.7/dist-packages/paramiko/transport.py", line 2199, in _negotiate_keys
    self.kex_engine.start_kex()
  File "/usr/local/lib/python3.7/dist-packages/paramiko/kex_curve25519.py", line 54, in start_kex
    serialization.Encoding.Raw, serialization.PublicFormat.Raw
  File "/usr/lib/python3.7/enum.py", line 349, in __getattr__
    raise AttributeError(name) from None
AttributeError: Raw