OSError: [Errno 28] No space left on device

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/util.py", line 1599, in test_read_write_permissions
OSError: [Errno 28] No space left on device

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/storage.py", line 67, in __init__
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/util.py", line 1604, in test_read_write_permissions
OSError: [Errno 28] No space left on device

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/gui/kivy/main_window.py", line 588, in wrapper
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/gui/kivy/main_window.py", line 642, in on_start
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/gui/kivy/main_window.py", line 690, in load_wallet_by_name
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/gui/kivy/uix/dialogs/password_dialog.py", line 335, in __init__
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/gui/kivy/uix/dialogs/password_dialog.py", line 343, in init_storage_from_path
  File "/home/user/wspace/electrum/.buildozer/android/app/electrum/storage.py", line 69, in __init__
electrum.storage.StorageReadWriteError: [Errno 28] No space left on device