Comment by opan

Please do not. Some people do not use Discord and thus will never report bugs or give feedback even if they use your software and would otherwise report bugs for other software.

Something public-facing that uses standard protocols would be ideal. Email, forums, IRC. For bug reports, a web form that doesn't need an account registration would be nice. You want to reduce friction or people will give up partway through the process. Don't mark too many fields as required or try too hard to categorize things either, that's a common misfeature I run into.