Adding a torrent already added doesn't show an error

[Ryrynz]

If I add a torrent that's already added into the client it returns with a notification that the torrent has been added.
With Remote Torrent Adder extension it says there's an error instead which is better feedback.
Ideally Torrent Clipper would return a message that the torrent is already loaded within the client.

[piperun]

Thanks for notifying the issue!
I'll look into it, I think unfortunately at most it'll be an error since unless the torrent UI sends a specific error msg about duplicate there's not a lot I can do.