Traceback (most recent call last):
  File "C:\Users\trevp\Electrum\electrum\plugins\payserver\qt.py", line 93, in <lambda>
    menu.addAction(_("View in payserver"), lambda: webopen(self.view_url(key)))
  File "electrum\gui\qt\util.py", line 1145, in webopen
  File "webbrowser.py", line 86, in open
  File "webbrowser.py", line 603, in open
TypeError: startfile: filepath should be string, bytes or os.PathLike, not NoneType