Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/electrum/gui/qt/history_list.py", line 745, in <lambda>
    menu.addAction(_("Increase fee"), lambda: self.parent.bump_fee_dialog(tx))
                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/electrum/gui/qt/main_window.py", line 2706, in bump_fee_dialog
    d = BumpFeeDialog(main_window=self, tx=tx, txid=txid)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/electrum/gui/qt/rbf_dialog.py", line 148, in __init__
    _BaseRBFDialog.__init__(
  File "/usr/lib/python3/dist-packages/electrum/gui/qt/rbf_dialog.py", line 42, in __init__
    assert fee is not None
           ^^^^^^^^^^^^^^^
AssertionError