AttributeError: 'NoneType' object has no attribute 'size'

[AndreMiras]

https://sentry.io/organizations/andre-5t/issues/1270076419/?referrer=github_plugin

AttributeError: 'NoneType' object has no attribute 'size'
(11 additional frame(s) were not displayed)
...
  File "home/andre/workspace/QrScan/.buildozer/android/platform/build/build/python-installs/qrscan/kivy/core/camera/camera_android.py", line 155, in _update
  File "kivy/_event.pyx", line 703, in kivy._event.EventDispatcher.dispatch
  File "kivy/_event.pyx", line 1214, in kivy._event.EventObservers.dispatch
  File "kivy/_event.pyx", line 1138, in kivy._event.EventObservers._dispatch
  File "home/andre/workspace/QrScan/.buildozer/android/platform/build/build/python-installs/qrscan/kivy/uix/camera.py", line 111, in _camera_loaded

AttributeError: 'NoneType' object has no attribute 'size'