Traceback (most recent call last):
  File "electrum/gui/qt/transaction_dialog.py", line 596, in do_broadcast
  File "electrum/gui/qt/send_tab.py", line 550, in save_pending_invoice
  File "electrum/wallet.py", line 1193, in save_invoice
  File "electrum/wallet.py", line 479, in save_db
  File "electrum/json_db.py", line 48, in wrapper
  File "electrum/json_db.py", line 398, in write
  File "electrum/json_db.py", line 48, in wrapper
  File "electrum/json_db.py", line 409, in _append_pending_changes
  File "electrum/storage.py", line 114, in append
FileNotFoundError: [Errno 2] No such file or directory: '/Volumes/NO NAME/new-electrum.json'