File "electrum\gui\qt\transaction_dialog.py", line 209, in save
  File "electrum\gui\qt\main_window.py", line 3454, in save_transaction_into_wallet
  File "electrum\util.py", line 356, in <lambda>
  File "electrum\util.py", line 352, in do_profile
  File "electrum\storage.py", line 88, in write
  File "electrum\storage.py", line 107, in _write