Re: why btdownloadcurses can't open it

[didier gaumet]

Hello,

please do not attach a (possibly corrupted) file to your post

the error you get is reported (rightly or wrongly) as bittornado 
specific and the software you use seems based on bittornado
http://support.proaudiotorrents.org/knowledgebase.php?article=7
http://manpages.ubuntu.com/manpages/bionic/man1/btdownloadcurses.bittornado.1.html

I would suggest trying a bittorrent client already packaged by Debian
https://packages.debian.org/search?suite=stable&section=all&arch=any&searchon=all&keywords=bittorrent