Can not connect linux on browser

[ivanli1990]

After start wssd on linux terminal，I connect the linux terminal on browser，but when I clikc the connect button on screen，the next screen shows:
“
Error: 'type' object is not iterable
Connection Reset By Peer
”
And the sshd server log on linux terminal shows:
“
ivanli@ubuntu:~$ wsshd
wsshd/0.1.0 running on 0.0.0.0:5000

DEBUG in wsshd [/usr/local/lib/python2.7/dist-packages/wssh-0.1.0-py2.7.egg/EGG-INFO/scripts/wsshd:27]:
127.0.0.1 -> ivanli@ubuntu: [interactive shell]

No handlers could be found for logger "paramiko.transport"

ERROR in wsshd [/usr/local/lib/python2.7/dist-packages/wssh-0.1.0-py2.7.egg/EGG-INFO/scripts/wsshd:47]:
Error while connecting to ubuntu: 'type' object is not iterable

Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/wssh-0.1.0-py2.7.egg/EGG-INFO/scripts/wsshd", line 44, in connect
allow_agent=app.config.get('WSSH_ALLOW_SSH_AGENT', False))
File "/usr/local/lib/python2.7/dist-packages/wssh-0.1.0-py2.7.egg/wssh/server.py", line 98, in open
look_for_keys=False)
File "/usr/local/lib/python2.7/dist-packages/paramiko/client.py", line 392, in connect
t.start_client(timeout=timeout)
File "/usr/local/lib/python2.7/dist-packages/paramiko/transport.py", line 545, in start_client
raise e
TypeError: 'type' object is not iterable
”
Please help me solve the problem, 3q~