Traceback (most recent call last):
  File "electrum\gui\qt\main_window.py", line 2344, in do_import_labels
  File "electrum\gui\qt\util.py", line 1164, in import_meta_gui
  File "electrum\wallet.py", line 721, in import_labels
  File "electrum\wallet.py", line 706, in set_label
AttributeError: 'int' object has no attribute 'replace'