Traceback (most recent call last):


 "/home/ubuntu/.virtualenvs/c9/lib/python3.4/site-packages/django/utils/autoreload.py", line 226, in wrapper

fn(*args, **kwargs)


 "/home/ubuntu/.virtualenvs/c9/lib/python3.4/site-packages/channels/management/commands/runserver.py", line 45, in inner_run

self.server_cls = RunserverCommand.server_cls
AttributeError: type object 'Command' has no attribute 'server_cls'

Traceback (most recent call last):


 "C:\Python27\lib\lib-tk\Tkinter.py", line 1542, in __call__

return self.func(*args)


 "C:\Python27\lib\site-packages\PySimpleGUI27\PySimpleGUI27.py", line 1457, in ButtonCallBack

file_name = tk.filedialog.askopenfilename(filetypes=filetypes, initialdir=self.InitialFolder)
# show the 'get file' dialog box
AttributeError: 'module' object has no attribute 'askopenfilename'
