title: PandasGUI ERROR — tornado.application — Exception in callback functools.partial
body: <p>When I try to run a a jupyter notebook program with PandasGUI, I get: PandasGUI INFO — numexpr.utils — NumExpr defaulting to 4 threads.</p>
  <p>That's followed by: PandasGUI ERROR — tornado.application — Exception in callback functools.partial(&lt;function Kernel.enter_eventloop..advance_eventloop at 0x000002A7E8AAEDC8&gt;)
  Traceback (most recent call last):
  File &quot;C:\Users\david.faltenhine\AppData\Local\Continuum\anaconda3\lib\site-packages\tornado\ioloop.py&quot;, line 743, in _run_callback
  ret = callback()
  File &quot;C:\Users\david.faltenhine\AppData\Local\Continuum\anaconda3\lib\site-packages\ipykernel\kernelbase.py&quot;, line 314, in advance_eventloop
  eventloop(self)
  TypeError: 'NoneType' object is not callable</p>
  <p>If I continue and run: gui = show(df) PandasGUI loads my df but hangs.</p>
  <p>I am able to load and run the titanic example data set, which seems to run fine, with no info message or errors...</p>
  <p>Edit: I've tried trimming down the amount of code that I'm loading.  The info message has gone away but still getting the tornado\ioloop.py &amp; ipykernel\kernelbase.py errors...</p>
  <p>Any ideas what might be the problem?</p>