Traceback (most recent call last):
  File "/tmp/.mount_electr3WiFn9/usr/lib/python3.10/site-packages/electrum/gui/qt/history_list.py", line 777, in <lambda>
    menu.addAction(_("View invoice"), lambda inv=invoices[0]: self.main_window.show_onchain_invoice(inv))
  File "/tmp/.mount_electr3WiFn9/usr/lib/python3.10/site-packages/electrum/gui/qt/main_window.py", line 1477, in show_onchain_invoice
    outputs_str = '\n'.join(map(lambda x: x.address + ' : ' + self.format_amount(x.value)+ self.base_unit(), invoice.outputs))
  File "/tmp/.mount_electr3WiFn9/usr/lib/python3.10/site-packages/electrum/gui/qt/main_window.py", line 1477, in <lambda>
    outputs_str = '\n'.join(map(lambda x: x.address + ' : ' + self.format_amount(x.value)+ self.base_unit(), invoice.outputs))
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'