Traceback (most recent call last):
  File "electrum/gui/qt/main_window.py", line 2491, in closeEvent
  File "electrum/gui/qt/main_window.py", line 2506, in clean_up
  File "electrum/simple_config.py", line 171, in set_key
  File "electrum/simple_config.py", line 180, in _set_key_in_user_config
  File "electrum/simple_config.py", line 272, in save_user_config
OSError: [Errno 28] No space left on device: '/Users/janjellinghaus/.electrum/config'