macOS bug "There is no current event loop in thread 'MainThread'"

[ailenmuller]

Hello,

I got the bug "There is no current event loop in thread 'MainThread'" when the printer was found but unable to connect.
I fixed it by adding the following to the ui.py file:

import asyncio
asyncio.set_event_loop(asyncio.new_event_loop())

After this change, it worked fine.

Python version 3.14.3
macOS version 26.2

Let me know if you'd fancy a pull request.
Thank you so much for this helpful app!