traceback ftp lektor python3

traceback.txt

lektor deploy --username xxxxxx --password xxxxxx
/Users/uk/.virtualenvs/xxxxxx/bin/../lib/python3.6/site.py:165: DeprecationWarning: 'U' mode is deprecated
  f = open(fullname, "rU")
Deploying to production
  Build cache: /Users/uk/Library/Caches/Lektor/builds/ac23d873bd37ecb20fdd544088809b91
  Target: ftps://xxxxxx/
  000 Connecting to server ...
  220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
  220-You are user number 1 of 50 allowed.
  220-Local time is now 00:23. Server port: 21.
  220-This is a private system - No anonymous login
  220-IPv6 connections are also welcome on this server.
  220 You will be disconnected after 15 minutes of inactivity.
  000 Could not authenticate.
  must be str, not bytes
/usr/local/Cellar/python3/3.6.1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/socket.py:657: ResourceWarning: unclosed <ssl.SSLSocket fd=5, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=6, laddr=('192.168.100.63', 62753), raddr=('5.57.41.51', 21)>
  self._sock = None
Done!