MySql工作台无法打开SSH隧道

上周我成功地使用了MySql Workbench，但今天早上，它系统性地未能打开SSH隧道

我已经检查了日志，发现以下内容：

16:46:47 [INF][     SSH tunnel]: Existing SSH tunnel not found, opening new one
16:46:54 [INF][     SSH tunnel]: Opening SSH tunnel to 192.168.200.254
16:46:55 [ERR][sshtunnel.py:notify_exception_error:235]: Traceback (most recent call last):
  File "/usr/share/mysql-workbench/sshtunnel.py", line 303, in _connect_ssh
    look_for_keys=has_key, allow_agent=has_key, timeout=SSH_CONNECTION_TIMEOUT)
  File "/usr/lib/python2.7/dist-packages/paramiko/client.py", line 325, in connect
    t.start_client()
  File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 492, in start_client
    raise e
ValueError: CTR mode needs counter parameter, not IV

16:46:55 [INF][     SSH tunnel]: TunnelManager.wait_connection authentication error: Authentication error, unhandled exception caught in tunnel manager, please refer to logs for details
16:46:55 [ERR][     SSH tunnel]: Authentication error opening SSH tunnel: Authentication error, unhandled exception caught in tunnel manager, please refer to logs for details
16:47:00 [INF][     SSH tunnel]: Existing SSH tunnel not found, opening new one

然而，当我尝试从终端连接时，SSH连接工作正常。你知道如何解决这个问题吗

调查结果：

看起来6.3.9版可能有bug。我用以下内容重新安装了MySql工作台（我在Ubuntu上）：

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我昨天也有同样的问题。我的解决方案是删除Workbench及其依赖项，然后再次安装它。我使用Ubuntu 16.04和Workbench 6.3.6。

这正是我刚才所做的。问题发生时我正在6.3.9。现在，在重新安装之后，我使用的是6.3.6，工作正常。

# The following will remove mysql too
sudo apt-get remove --purge mysql*

sudo apt-get autoremove
sudo apt-get autoclean

sudo apt-get update

# Then reboot your PC

# Re-install MySql Workbench from the Ubuntu software application