File "/home/user/wspace/electrum/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/Electrum/kivy/base.py", line 347, in mainloop
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/Electrum/kivy/base.py", line 391, in idle
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/Electrum/kivy/base.py", line 342, in dispatch_input
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/Electrum/kivy/base.py", line 308, in post_dispatch_input
  File "kivy/_event.pyx", line 724, in kivy._event.EventDispatcher.dispatch
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/Electrum/kivy/uix/behaviors/button.py", line 179, in on_touch_up
  File "kivy/_event.pyx", line 720, in kivy._event.EventDispatcher.dispatch
  File "kivy/_event.pyx", line 1263, in kivy._event.EventObservers.dispatch
  File "kivy/_event.pyx", line 1147, in kivy._event.EventObservers._dispatch
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/Electrum/kivy/lang/builder.py", line 57, in custom_callback
  File "<string>", line 33, in <module>
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/gui/kivy/main_window.py", line 1217, in <lambda>
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/gui/kivy/uix/screens.py", line 373, in send_tx
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/gui/kivy/uix/screens.py", line 331, in save_invoice
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/wallet.py", line 793, in save_invoice
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/wallet.py", line 315, in save_db
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/wallet_db.py", line 1354, in write
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/util.py", line 412, in <lambda>
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/util.py", line 408, in do_profile
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/wallet_db.py", line 1364, in _write
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/storage.py", line 85, in write