File "electrum\gui\qt\main_window.py", line 713, in <lambda>
  File "electrum\gui\qt\main_window.py", line 3022, in import_contacts
  File "electrum\gui\qt\util.py", line 1003, in import_meta_gui
  File "electrum\contacts.py", line 56, in import_file
  File "electrum\contacts.py", line 131, in _validate