Traceback (most recent call last):


 "C:\Users\S10500\AppData\Local\Continuum\anaconda3\lib\site-packages\spyder\widgets\ipythonconsole\client.py", line 575, in show_time

elapsed_time = time.monotonic() - self.t0
TypeError: unsupported operand type(s) for -: 'float' and 'NoneType'


Comment: An exception occurred in this state: Traceback (most recent call last):


 "/usr/lib/python2.7/dist-packages/salt/state.py", line 1851, in call

**cdata['kwargs'])


 "/usr/lib/python2.7/dist-packages/salt/loader.py", line 1795, in wrapper

return f(*args, **kwargs)


 "/usr/lib/python2.7/dist-packages/salt/states/pip_state.py", line 686, in installed

upgrade, user, cwd, bin_env)


 "/usr/lib/python2.7/dist-packages/salt/states/pip_state.py", line 240, in _check_if_installed

desired_version = available_versions[-1]

TypeError: 'NoneType' object has no attribute '__getitem__'

Started: 12:28:40.633624
