title: guild.channels.set(channel.id, channel) Cannot read property 'id' of undefined
body: <p>As of very recent, some Discord.js users are now running into these errors:</p>
  <pre><code>guild.channels.set(channel.id, channel);
                                     ^
  
  TypeError: Cannot read property 'id' of undefined
  </code></pre>
  <pre><code>bughunter Bug:
  node_modules\discord.js\src\client\voice\networking\VoiceWebSocket.js:123
  server_id: this.connection.channel.guild.id,
                                     ^
  TypeError: Cannot read property 'guild' of undefined
  </code></pre>
  <p>Read the provided answer below.</p>