Traceback (most recent call last):
  File "electrum\gui\qt\send_tab.py", line 639, in do_pay_or_get_invoice
  File "electrum\gui\qt\send_tab.py", line 742, in do_pay_invoice
  File "electrum\gui\qt\send_tab.py", line 411, in pay_onchain_dialog
  File "electrum\gui\qt\send_tab.py", line 610, in save_pending_invoice
  File "electrum\wallet.py", line 1215, in save_invoice
  File "electrum\wallet.py", line 426, in save_db
  File "electrum\json_db.py", line 274, in write
  File "electrum\util.py", line 526, in do_profile
  File "electrum\json_db.py", line 284, in _write
  File "electrum\storage.py", line 83, in write
  File "electrum\storage.py", line 182, in encrypt_before_writing
MemoryError