Discord.js: Guild Delete event error

[Koyamie]

Please describe the problem you are having in as much detail as possible:
Got a random error on guild delete event.

Include a reproducible code sample here, if possible:

TypeError: Cannot read property 'get' of undefined
    at Guild.get voice [as voice] (/home/koyamie/Koya/node_modules/discord.js/src/structures/Guild.js:397:29)
    at GuildDeleteAction.handle (/home/koyamie/Koya/node_modules/discord.js/src/client/actions/GuildDelete.js:40:17)
    at Object.module.exports [as GUILD_DELETE] (/home/koyamie/Koya/node_modules/discord.js/src/client/websocket/handlers/GUILD_DELETE.js:4:30)
    at WebSocketManager.handlePacket (/home/koyamie/Koya/node_modules/discord.js/src/client/websocket/WebSocketManager.js:388:31)
    at WebSocketShard.onPacket (/home/koyamie/Koya/node_modules/discord.js/src/client/websocket/WebSocketShard.js:411:22)
    at WebSocketShard.onMessage (/home/koyamie/Koya/node_modules/discord.js/src/client/websocket/WebSocketShard.js:265:10)
    at WebSocket.onMessage (/home/koyamie/Koya/node_modules/discord.js/node_modules/ws/lib/event-target.js:120:16)
    at WebSocket.emit (events.js:193:13)
    at Receiver.receiverOnMessage (/home/koyamie/Koya/node_modules/discord.js/node_modules/ws/lib/websocket.js:789:20)
    at Receiver.emit (events.js:193:13)
    at Receiver.dataMessage (/home/koyamie/Koya/node_modules/discord.js/node_modules/ws/lib/receiver.js:413:14)
    at Receiver.getData (/home/koyamie/Koya/node_modules/discord.js/node_modules/ws/lib/receiver.js:352:17)
    at Receiver.startLoop (/home/koyamie/Koya/node_modules/discord.js/node_modules/ws/lib/receiver.js:138:22)
    at Receiver._write (/home/koyamie/Koya/node_modules/discord.js/node_modules/ws/lib/receiver.js:74:10)
    at doWrite (_stream_writable.js:415:12)
    at writeOrBuffer (_stream_writable.js:399:5)

Further details:

• discord.js version: lastest master
• Node.js version: 11.14.0
• Operating system: debian 9
• Priority this issue should have – please be realistic and elaborate if possible:

• [x] I have also tested the issue on latest master, commit hash:

[didinele]

The error seems to be caused by Guild#voiceStates somehow being undefined, let me investigate a little further

EDIT: Think I found it, it might be because the guild is no longer available, the event does actually emit when the guild goes into outage, would explain how the error occured