File "/home/jeremy/.local/lib/python3.6/site-packages/electrum/gui/qt/main_window.py", line 3005, in closeEvent
    self.clean_up()
  File "/home/jeremy/.local/lib/python3.6/site-packages/electrum/gui/qt/main_window.py", line 3022, in clean_up
    self.gui_object.close_window(self)
  File "/home/jeremy/.local/lib/python3.6/site-packages/electrum/gui/qt/__init__.py", line 340, in close_window
    self.daemon.stop_wallet(window.wallet.storage.path)
  File "/home/jeremy/.local/lib/python3.6/site-packages/electrum/daemon.py", line 512, in stop_wallet
    wallet.stop()
  File "/home/jeremy/.local/lib/python3.6/site-packages/electrum/wallet.py", line 348, in stop
    self.save_db()
  File "/home/jeremy/.local/lib/python3.6/site-packages/electrum/wallet.py", line 288, in save_db
    self.db.write(self.storage)
  File "/home/jeremy/.local/lib/python3.6/site-packages/electrum/wallet_db.py", line 1224, in write
    self._write(storage)
  File "/home/jeremy/.local/lib/python3.6/site-packages/electrum/wallet_db.py", line 1232, in _write
    storage.write(self.dump())
  File "/home/jeremy/.local/lib/python3.6/site-packages/electrum/util.py", line 390, in <lambda>
    return lambda *args, **kw_args: do_profile(args, kw_args)
  File "/home/jeremy/.local/lib/python3.6/site-packages/electrum/util.py", line 386, in do_profile
    o = func(*args, **kw_args)
  File "/home/jeremy/.local/lib/python3.6/site-packages/electrum/storage.py", line 86, in write
    f.write(s)