Unnecessarily cryptic error when pressing "Load from Downloads" after a file has been deleted from the downloads folder while Eddy is running.

[notnullnotvoid]

To reproduce:

1. Have a debian package in downloads folder
2. Open Eddy, "Load from Downloads" button is available.
3. Delete the debian package
4. Click "Load from Downloads"
5. Receive the following message in an error dialog:

"Some Packages Could Not Be Added [name of package file]: could not resolve: /home/[user]/Downloads/[name of package file]"

Expected result: probably it just shouldn't attempt to add files that have been deleted, bonus points if the "Load from Downloads" button appears/disappears in response to changes to the contents of the downloads folder while the program is running instead of only looking at the folder once when the program starts up (I assume that's what it does).

Also only the first sentence of the error message can't be selected for some reason (and thus can't be copied which is annoying), and is capitalized weirdly, those are nitpicks.

I am using Eddy 1.1.9 as bundled with PopOS 22.04 LTS.