Traceback (most recent call last):
  File "electrum\gui\qt\main_window.py", line 2367, in do_process_from_text
  File "electrum\gui\qt\main_window.py", line 1197, in show_transaction
  File "electrum\gui\qt\transaction_dialog.py", line 436, in show_transaction
  File "electrum\gui\qt\transaction_dialog.py", line 588, in __init__
  File "electrum\gui\qt\transaction_dialog.py", line 960, in update
  File "electrum\wallet.py", line 3323, in get_tx_fee_warning
AssertionError: fee=-9895500 must be non-negative satoshis