# Buggy code
async def pause(self, ctx: commands.Context):
    """Pause or resume a playing track."""
    dj_enabled = await self.config.guild(ctx.guild).dj_enabled()
    if not self._player_check(ctx):
        return await self._embed_msg(ctx, _("Nothing playing."))
    player = lavalink.get_player(ctx.guild.id)
    if (
        not ctx.author.voice or ctx.author.voice.channel != player.channel
    ) and not await self._can_instaskip(ctx, ctx.author):
        return await self._embed_msg(
            ctx, _("You must be in the voice channel pause or resume.")
        )
    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 pause or resume tracks.")
            )

    if not player.current:
        return await self._embed_msg(ctx, _("Nothing playing."))
    query = audio_dataclasses.Query.process_input(player.current.uri)
    if query.is_local:
        query = audio_dataclasses.Query.process_input(player.current.uri)
        if player.current.title == "Unknown title":
            description = "{}".format(query.track.to_string_hidden())
        else:
            song = bold("{} - {}").format(player.current.author, player.current.title)
            description = "{}\n{}".format(song, query.track.to_string_hidden())
    else:
        description = bold("[{}]({})").format(player.current.title, player.current.uri)

    if player.current and not player.paused:
        await player.pause()
        embed = discord.Embed(
            colour=await ctx.embed_colour(),
            title=_("Track Paused"),
            description=description,
        )
        return await ctx.send(embed=embed)
    if player.current and player.paused:
        await player.pause(False)
        embed = discord.Embed(
            colour=await ctx.embed_colour(),
            title=_("Track Resumed"),
            description=description,
        )
        return await ctx.send(embed=embed)

    await self._embed_msg(ctx, _("Nothing playing."))


# 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 pause(self, ctx: commands.Context):
    """Pause or resume a playing track."""
    dj_enabled = self._dj_status_cache.setdefault(
        ctx.guild.id, await self.config.guild(ctx.guild).dj_enabled()
    )
    if not self._player_check(ctx):
        return await self._embed_msg(ctx, title=_("Nothing playing."))
    player = lavalink.get_player(ctx.guild.id)
    if (
        not ctx.author.voice or ctx.author.voice.channel != player.channel
    ) and not await self._can_instaskip(ctx, ctx.author):
        return await self._embed_msg(
            ctx,
            title=_("Unable To Manage Tracks"),
            description=_("You must be in the voice channel to pause or resume."),
        )
    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 Manage Tracks"),
                description=_("You need the DJ role to pause or resume tracks."),
            )

    if not player.current:
        return await self._embed_msg(ctx, title=_("Nothing playing."))
    description = get_track_description(player.current)

    if player.current and not player.paused:
        await player.pause()
        return await self._embed_msg(
            ctx, title=_("Track Paused"), description=description
        )
    if player.current and player.paused:
        await player.pause(False)
        return await self._embed_msg(
            ctx, title=_("Track Resumed"), description=description
        )

    await self._embed_msg(ctx, title=_("Nothing playing."))