Traceback (most recent call last):
  File "electrum\gui\qt\transaction_dialog.py", line 581, in do_broadcast
  File "electrum\gui\qt\send_tab.py", line 541, in save_pending_invoice
  File "electrum\wallet.py", line 1191, in save_invoice
  File "electrum\wallet.py", line 482, in save_db
  File "electrum\json_db.py", line 48, in wrapper
  File "electrum\json_db.py", line 389, in write
  File "electrum\json_db.py", line 48, in wrapper
  File "electrum\json_db.py", line 400, in _append_pending_changes
  File "electrum\storage.py", line 111, in append
AssertionError: (11830553, 12530728)