Traceback (most recent call last):
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-arm64-v8a/build/python-installs/Electrum/kivy/base.py", line 347, in mainloop
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-arm64-v8a/build/python-installs/Electrum/kivy/base.py", line 391, in idle
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-arm64-v8a/build/python-installs/Electrum/kivy/base.py", line 342, in dispatch_input
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-arm64-v8a/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-arm64-v8a/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-arm64-v8a/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 1292, in <lambda>
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/gui/kivy/main_window.py", line 1447, in show_private_key
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/wallet.py", line 697, in export_private_key
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/keystore.py", line 653, in get_private_key
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/keystore.py", line 605, in get_master_private_key
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/crypto.py", line 311, in pw_decode
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/crypto.py", line 265, in pw_decode_bytes
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-arm64-v8a/build/other_builds/python3/arm64-v8a__ndk_target_21/python3/Lib/base64.py", line 80, in b64decode
  File "/home/user/wspace/electrum/.buildozer/android/platform/build-arm64-v8a/build/other_builds/python3/arm64-v8a__ndk_target_21/python3/Lib/base64.py", line 45, in _bytes_from_decode_data
TypeError: argument should be a bytes-like object or ASCII string, not 'NoneType'