File "electrum\gui\qt\transaction_dialog.py", line 315, in save
  File "electrum\gui\qt\main_window.py", line 3309, in save_transaction_into_wallet
  File "electrum\wallet.py", line 302, in save_db
  File "electrum\wallet_db.py", line 1239, in write
  File "electrum\wallet_db.py", line 1247, in _write
  File "electrum\util.py", line 408, in <lambda>
  File "electrum\util.py", line 404, in do_profile
  File "electrum\storage.py", line 85, in write