# Buggy code
async def _queue_clean(self, ctx: commands.Context):
    """Removes songs from the queue if the requester is not in the voice channel."""
    try:
        player = lavalink.get_player(ctx.guild.id)
    except KeyError:
        return await self._embed_msg(ctx, _("There's nothing in the queue."))
    dj_enabled = await self.config.guild(ctx.guild).dj_enabled()
    if not self._player_check(ctx) or not player.queue:
        return await self._embed_msg(ctx, _("There's nothing in the queue."))
    if dj_enabled:
        if not await self._can_instaskip(ctx, ctx.author) and not await self._is_alone(
            ctx
        ):
            return await self._embed_msg(
                ctx, _("You need the DJ role to clean the queue.")
            )
    clean_tracks = []
    removed_tracks = 0
    listeners = player.channel.members
    for track in player.queue:
        if track.requester in listeners:
            clean_tracks.append(track)
        else:
            removed_tracks += 1
    player.queue = clean_tracks
    if removed_tracks == 0:
        await self._embed_msg(ctx, _("Removed 0 tracks."))
    else:
        await self._embed_msg(
            ctx,
            _(
                "Removed {removed_tracks} tracks queued by members o"
                "utside of the voice channel."
            ).format(removed_tracks=removed_tracks),
        )


# Traceback (RuntimeError)
Traceback (most recent call last):
File "/home/martinebots/martinebotsvenv/lib/python3.7/site-packages/discord/ext/commands/core.py", line 79, in wrapped
ret = await coro(*args, **kwargs)
File "/home/martinebots/martinebotscogs/cogs_modified/audio/audio.py", line 3183, in play
await self._enqueue_tracks(ctx, query)
File "/home/martinebots/martinebotscogs/cogs_modified/audio/audio.py", line 3885, in _enqueue_tracks
result, called_api = await self.music_cache.lavalink_query(ctx, player, query)
File "/home/martinebots/martinebotscogs/cogs_modified/audio/apis.py", line 911, in lavalink_query
results = await player.load_tracks(query)
File "/home/martinebots/martinebotsvenv/lib/python3.7/site-packages/lavalink/rest_api.py", line 300, in load_tracks
self.__check_node_ready()
File "/home/martinebots/martinebotsvenv/lib/python3.7/site-packages/lavalink/rest_api.py", line 268, in __check_node_ready
raise RuntimeError("Cannot execute REST request when node not ready.")
RuntimeError: Cannot execute REST request when node not ready.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/martinebots/martinebotsvenv/lib/python3.7/site-packages/discord/ext/commands/bot.py", line 863, in invoke
await ctx.command.invoke(ctx)
File "/home/martinebots/martinebotsvenv/lib/python3.7/site-packages/discord/ext/commands/core.py", line 728, in invoke
await injected(*ctx.args, **ctx.kwargs)
File "/home/martinebots/martinebotsvenv/lib/python3.7/site-packages/discord/ext/commands/core.py", line 88, in wrapped
raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: RuntimeError: Cannot execute REST request when node not ready.```

# Fixed code
async def _queue_clean(self, ctx: commands.Context):
    """Removes songs from the queue if the requester is not in the voice channel."""
    try:
        player = lavalink.get_player(ctx.guild.id)
    except KeyError:
        return await self._embed_msg(ctx, title=_("There's nothing in the queue."))
    dj_enabled = self._dj_status_cache.setdefault(
        ctx.guild.id, await self.config.guild(ctx.guild).dj_enabled()
    )
    if not self._player_check(ctx) or not player.queue:
        return await self._embed_msg(ctx, title=_("There's nothing in the queue."))
    if dj_enabled:
        if not await self._can_instaskip(ctx, ctx.author) and not await self._is_alone(
            ctx
        ):
            return await self._embed_msg(
                ctx,
                title=_("Unable To Clean Queue"),
                description=_("You need the DJ role to clean the queue."),
            )
    clean_tracks = []
    removed_tracks = 0
    listeners = player.channel.members
    for track in player.queue:
        if track.requester in listeners:
            clean_tracks.append(track)
        else:
            removed_tracks += 1
    player.queue = clean_tracks
    if removed_tracks == 0:
        await self._embed_msg(ctx, title=_("Removed 0 tracks."))
    else:
        await self._embed_msg(
            ctx,
            title=_("Removed racks from the queue"),
            description=_(
                "Removed {removed_tracks} tracks queued by members "
                "outside of the voice channel."
            ).format(removed_tracks=removed_tracks),
        )