insertChannelInOrder fails on enabling community mode

[TheArcaneBrony]

[Error] 400 /api/v9/guilds/1295695667913564212
 TypeError: Cannot read properties of undefined (reading 'remove')
    at Guild.insertChannelInOrder (/home/Rory/git/spacebar/server/dist/util/entities/Guild.js:211:32)
    at /home/Rory/git/spacebar/server/dist/api/routes/guilds/#guild_id/index.js:125:28 
body: [Object: null prototype] {
  features: [ 'COMMUNITY' ],
  verification_level: 1,
  default_message_notifications: 1,
  explicit_content_filter: 2,
  rules_channel_id: '1',
  public_updates_channel_id: '1'
}

guild.ts:445:
guild.channel_ordering.remove(channel_id);

[TheArcaneBrony]

Can be reproduced by following these steps in discord@210901:
Create guild
Set up community
Have server create "moderator only" channel
-> Throws on save