Traceback (most recent call last):
  File "electrum\gui\qt\invoice_list.py", line 186, in <lambda>
  File "electrum\gui\qt\send_tab.py", line 599, in do_pay_invoice
  File "electrum\gui\qt\send_tab.py", line 666, in pay_lightning_invoice
  File "electrum\wallet.py", line 1797, in can_pay_onchain
  File "electrum\util.py", line 483, in do_profile
  File "electrum\wallet.py", line 1871, in make_unsigned_transaction
TypeError: conversion from NoneType to Decimal is not supported