No error message shown in UI when file download fails
Issue
If an file download by http fails, eg due to a 403, Gajim's image preview UI does not show any hint. The error is only logged in console:
07.06.2022 13:56:15 (W) gajim.c.preview Download failed: https://upload.trashserver.net/upload/28633aa98e4ff85058e74ad2a0adbbe47d926bb8/8xsPn5w421Oas28D8aRlnHWLDU5p41bCnprNXUu4/sonnenuntergang.jpg
07.06.2022 13:56:15 (W) gajim.c.preview Cancelled
It would be convenient if Gajim shows an error message Failed to fetch file (403)
The download button's icon could also turn into a retry
symbol in this case.
Version
Gajim 1.4.3