Traceback (most recent call last):
  File "electrum\gui\qt\main_window.py", line 2491, in closeEvent
  File "electrum\gui\qt\main_window.py", line 2522, in clean_up
  File "electrum\gui\qt\__init__.py", line 426, in close_window
  File "electrum\daemon.py", line 602, in stop_wallet
  File "concurrent\futures\_base.py", line 446, in result
  File "concurrent\futures\_base.py", line 391, in __get_result
  File "electrum\daemon.py", line 611, in _stop_wallet
  File "electrum\wallet.py", line 457, in stop
  File "electrum\wallet.py", line 390, in save_db
  File "electrum\wallet_db.py", line 1524, in write
  File "electrum\util.py", line 445, in <lambda>
  File "electrum\util.py", line 441, in do_profile
  File "electrum\wallet_db.py", line 1534, in _write
  File "electrum\storage.py", line 87, in write
OSError: [Errno 9] Bad file descriptor