File "/tmp/.mount_electrn0MYE6/usr/lib/python3.7/site-packages/electrum/gui/qt/__init__.py", line 291, in wrapper
    return func(self, *args, **kwargs)
  File "/tmp/.mount_electrn0MYE6/usr/lib/python3.7/site-packages/electrum/gui/qt/__init__.py", line 316, in start_new_window
    wallet = self._start_wizard_to_select_or_create_wallet(path)
  File "/tmp/.mount_electrn0MYE6/usr/lib/python3.7/site-packages/electrum/gui/qt/__init__.py", line 361, in _start_wizard_to_select_or_create_wallet
    db = WalletDB(storage.read(), manual_upgrades=False)
  File "/tmp/.mount_electrn0MYE6/usr/lib/python3.7/site-packages/electrum/wallet_db.py", line 73, in __init__
    self.load_data(raw)
  File "/tmp/.mount_electrn0MYE6/usr/lib/python3.7/site-packages/electrum/wallet_db.py", line 106, in load_data
    self.upgrade()
  File "/tmp/.mount_electrn0MYE6/usr/lib/python3.7/site-packages/electrum/util.py", line 412, in <lambda>
    return lambda *args, **kw_args: do_profile(args, kw_args)
  File "/tmp/.mount_electrn0MYE6/usr/lib/python3.7/site-packages/electrum/util.py", line 408, in do_profile
    o = func(*args, **kw_args)
  File "/tmp/.mount_electrn0MYE6/usr/lib/python3.7/site-packages/electrum/wallet_db.py", line 175, in upgrade
    self._convert_version_24()
  File "/tmp/.mount_electrn0MYE6/usr/lib/python3.7/site-packages/electrum/wallet_db.py", line 539, in _convert_version_24
    for ser, v in l: