File "/usr/lib/python3.8/site-packages/electrum/gui/qt/channel_details.py", line 99, in do_ln_payment_completed
    self.move('inflight', 'settled', payment_hash)
  File "/usr/lib/python3.8/site-packages/electrum/gui/qt/channel_details.py", line 73, in move
    row_idx = self.keyname_rows[fro].pop(payment_hash)