Discord.js: [6.1.0 indev] Crashing when user leaves then joins voice channel on server while playing audio file

[Bigmacbook]

Bot crashing when a user leaves then joins any voice channel on server while bot is playing a audio file.

Error:

C:\Users\USER\Desktop\BotBot\indev\node_modules\discord.js\lib\Client\InternalClient.js:2088
                                                if (connection.voiceChannel.id !== data.channel_id) {
                                                                           ^

TypeError: Cannot read property 'id' of null
    at WebSocket.websocket.onmessage (C:\Users\USER\Desktop\BotBot\indev\node_modules\discord.js\lib\Client\InternalClient.js:2088:34)
    at WebSocket.onMessage (C:\Users\USER\Desktop\BotBot\indev\node_modules\ws\lib\WebSocket.js:418:14)
    at emitTwo (events.js:105:20)
    at WebSocket.emit (events.js:185:7)
    at Receiver.ontext (C:\Users\USER\Desktop\BotBot\indev\node_modules\ws\lib\WebSocket.js:816:10)
    at C:\Users\USER\Desktop\BotBot\indev\node_modules\ws\lib\Receiver.js:477:18
    at Receiver.applyExtensions (C:\Users\USER\Desktop\BotBot\indev\node_modules\ws\lib\Receiver.js:364:5)
    at C:\Users\USER\Desktop\BotBot\indev\node_modules\ws\lib\Receiver.js:466:14
    at Receiver.flush (C:\Users\USER\Desktop\BotBot\indev\node_modules\ws\lib\Receiver.js:340:3)
    at Receiver.opcodes.1.finish (C:\Users\USER\Desktop\BotBot\indev\node_modules\ws\lib\Receiver.js:482:12)

My Code

var discord = require('discord.js');

var bot = new discord.Client();

bot.login(EMAIL, PASSWORD);

bot.on('message', function(message) {
        if (message.content === "play") {
            bot.joinVoiceChannel(message.author.voiceChannel, function() {
                    bot.voiceConnection.playFile(__dirname+'/test.mp3', {
                        volume: 0.75
                    }, function(error, intent) {
                        intent.on('end', function() {
                            bot.leaveVoiceChannel();
                        });
                    })

            })
        }
});

[Bigmacbook]

Found where the bug triggered. Seems like an attempt to create "voiceMoved" Event which is not documented in the docs. This move event is useless because its triggered on voiceJoin and voiceLeave.

When I remove this block of code it fixes the bug.

InternalClient.js (Lines: 2086 - 2093)

if (connection) {
    // existing connection, perhaps channel moved
    if (connection.voiceChannel.id !== data.channel_id) {
        // moved, update info
        connection.voiceChannel = self.channels.get("id", data.channel_id);
        client.emit("voiceMoved", connection.voiceChannel); // Moved to a new channel
    }
}

[abalabahaha]

/tableflip

[ghost]

may you pleeeeassseeeeeeeeeeeeee fix this bug? thanks!

[txj-xyz]

bugs are liferino :100:

[Bigmacbook]

Bug has been fixed

Commit

[aemino]

This bug still occurred for me (since I'm using OAuth, while this example doesn't)

Made a pull request that fixes the issue:

266