Why Are My Discord Bot Events Failing and My Cache Empty?

Discord Gateway Intents: Resolving Event Emission Failure and Cache Issues

Recently, some Discord users have faced difficulties with event emissions and cache management. Specifically, events such as guildMemberAdd, guildMemberRemove, and guildMemberUpdate have stopped triggering, resulting in unresponsive functionality. Additionally, user caches have been observed to be empty or extremely limited. Moreover, functions that aim to fetch guild members have been encountering timeouts.

These issues can be attributed to Discord's recent enforcement of "Privileged Intents." Intents are mechanisms that allow you to subscribe to specific data streams on Discord. Two of these intents, GUILD_MEMBERS and GUILD_PRESENCES, are considered privileged due to their sensitive nature and have been disabled by default as of October 27th, 2020.

Impact of Privileged Intents

Disabling privileged intents can lead to various problems:

• Member and user caches being empty or significantly depleted on startup
• Guild.memberCount returning outdated values
• Presence-related events failing to trigger
• Presence data returning null or undefined
• Guild members appearing offline
• Timeouts occurring during login if fetchAllMembers is enabled
• Timeouts from GuildMemberManager.fetch() and UserManager.fetch() methods
• Failure of events involving guild members, such as guildMemberAdd, guildMemberRemove, guildMemberUpdate, guildMemberSpeaking, and guildMembersChunk

Resolution

To resolve this issue, you must manually enable privileged intents through the Discord Developer Portal:

1. Navigate to the Discord Developer Portal.
2. Select your application.
3. Go to the "Bot" tab in the sidebar.
4. Scroll down to the "Privileged Gateway Intents" section.
5. Check the boxes for GUILD_MEMBERS and/or GUILD_PRESENCES.
6. If your bot has more than 75 guilds, Discord will need to verify it first. Follow the instructions to request whitelist access.

Once enabled, you will need to specify the desired intents in your discord.js module configuration. If you do not need all intents, you can selectively enable specific ones.

Resources

• Discord.js Official Guide - Gateway Intents
• Discord Developer Documentation - Gateway Intents
• Gateway Update FAQ
• Discord API Github - Issue 1363 - Privileged Intents
• Discord Blog - The Future of Bots on Discord

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