Using the latest version of All The Mods 6

DiscordIntegration-2.0.1 (MC 1.16.3)

https://pastebin.com/TLSp3ZAv

Any further information needed please let me know

How did you manage to fix this?

Add your clientid to this page https://discordapi.com/permissions.html#805399632

Make sure you also New Requirement: Enable Server Members Intent on this bot page