Occasional Queue.Empty exception in kivy-twisted reactor

[Roman]

Hi,

I have a Kivy app using twisted as well. It's done in the same way as the official example Using Twisted inside Kivy, but every now and then it exits with this exception:

Traceback (most recent call last):
  File "/home/kivy/beerctrl/src/.buildozer/android/app/mobile/commapp.py", line 5260, in run
  File "/home/kivy/beerctrl/src/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages/kivy/app.py", line 828, in run
  File "/home/kivy/beerctrl/src/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages/kivy/base.py", line 487, in runTouchApp
  File "/home/kivy/beerctrl/src/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages/kivy/core/window/window_pygame.py", line 403, in mainloop
  File "/home/kivy/beerctrl/src/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages/kivy/core/window/window_pygame.py", line 290, in _mainloop
  File "/home/kivy/beerctrl/src/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages/kivy/base.py", line 327, in idle
  File "/home/kivy/beerctrl/src/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages/kivy/clock.py", line 515, in tick
  File "/home/kivy/beerctrl/src/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages/kivy/clock.py", line 647, in _process_events
  File "/home/kivy/beerctrl/src/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages/kivy/clock.py", line 406, in tick
  File "/home/kivy/beerctrl/src/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages/kivy/support.py", line 204, in reactor_work
  File "/lib/python2.7/site-packages/twisted/internet/_threadedselect.py", line 228, in _interleave
  File "/home/kivy/beerctrl/src/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/Queue.py", line 190, in get_nowait
  File "/home/kivy/beerctrl/src/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/Queue.py", line 165, in get
Empty

I tried to go through all the files to see if there is a way to catch it without the program to end, but I haven't found a nice way to do that.

I am not sure why it happens in the first place, it happens only sometimes and it almost seems like a poor wi-fi connection plays a part as well.

Is there a way to avoid this exception? Any experience on why does it occur? I was also thinking about some catching along the way (for example in kivy base or clock modules), but I believe I could mess things up even more.

I cannot provide source code as it's a legal property of a company I work for. Using Python 2.7, Kivy 1.9.2 and Twisted 13.2.0.

[Roman]

UPDATE:

I managed to catch this exception using ExceptionHandler in kivy, but I have yet to find out if ignoring this exception can result in any unpredicted behaviour.

I could still use some help or at least opinions on the cause of this exception in the first place and how to prevent it from happening (if possible).