In the contribution guide it says "Please report bugs and request support through our Discord server. GitHub issues are automatically closed." And Before opening a PR:

Discuss the change in #code-changes
Wait for it to be acknowledged/approved
Then open a PR". 

My issue with this and having discord be the primary way of communication for gameantive development in general is that for me and im sure many other, i do not want to use discord because of the ID verification issue that they have doubled down on, and they are known to not be very secure and even had a data breach not too long ago leaking many government it's. The point is there should be alternatives rather than just discord I my opinion, Teamspeak,Zulip which is open source and can be self hosted, and Fluxer which i think would be the best option since it's open source, can be self hosted, and has very similar UI to discord however it still is in a public beta phase however it's development so far seems very promising and may even be ready to be used now, but that obviously would require testing.