# Buggy code
async def _queue_cleanself(self, ctx: commands.Context):
    """Removes all tracks you requested from the queue."""

    try:
        player = lavalink.get_player(ctx.guild.id)
    except KeyError:
        return await self._embed_msg(ctx, _("There's nothing in the queue."))
    if not self._player_check(ctx) or not player.queue:
        return await self._embed_msg(ctx, _("There's nothing in the queue."))

    clean_tracks = []
    removed_tracks = 0
    for track in player.queue:
        if track.requester != ctx.author:
            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 {member.display_name}."
            ).format(removed_tracks=removed_tracks, member=ctx.author),
        )


# 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_cleanself(self, ctx: commands.Context):
    """Removes all tracks you requested from the queue."""

    try:
        player = lavalink.get_player(ctx.guild.id)
    except KeyError:
        return await self._embed_msg(ctx, title=_("There's nothing in the queue."))
    if not self._player_check(ctx) or not player.queue:
        return await self._embed_msg(ctx, title=_("There's nothing in the queue."))

    clean_tracks = []
    removed_tracks = 0
    for track in player.queue:
        if track.requester != ctx.author:
            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 tracks from the queue"),
            description=_(
                "Removed {removed_tracks} tracks queued by {member.display_name}."
            ).format(removed_tracks=removed_tracks, member=ctx.author),
        )