File "electrum\gui\qt\main_window.py", line 2309, in enable_lightning
  File "electrum\wallet.py", line 333, in init_lightning
  File "electrum\wallet.py", line 293, in save_db
  File "electrum\wallet_db.py", line 1224, in write
  File "electrum\wallet_db.py", line 1232, in _write
  File "electrum\util.py", line 406, in <lambda>
  File "electrum\util.py", line 402, in do_profile
  File "electrum\storage.py", line 86, in write