Traceback (most recent call last):
  File "electrum\gui\qt\main_window.py", line 2195, in do_process_from_file
  File "electrum\gui\qt\main_window.py", line 1109, in show_transaction
  File "electrum\gui\qt\transaction_dialog.py", line 420, in show_transaction
  File "electrum\gui\qt\transaction_dialog.py", line 565, in __init__
  File "electrum\gui\qt\transaction_dialog.py", line 909, in update
TypeError: bad operand type for abs(): 'NoneType'