# Buggy code
async def run_all_pending_tasks(self):
    async with self._lock:
        log.debug("Running pending writes to database")
        with contextlib.suppress(Exception):
            tasks = {"update": [], "insert": []}
            for k, task in self._tasks.items():
                for t, args in task.items():
                    tasks[t].append(args)
            self._tasks = {}

            await asyncio.gather(
                *[self.insert(*a) for a in tasks["insert"]], return_exceptions=True
            )
            await asyncio.gather(
                *[self.update(*a) for a in tasks["update"]], return_exceptions=True
            )
        log.debug("Completed pending writes to database have finished")


# 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 run_all_pending_tasks(self):
    async with self._lock:
        log.debug("Running pending writes to database")
        with contextlib.suppress(Exception):
            tasks = {"update": [], "insert": []}
            for k, task in self._tasks.items():
                for t, args in task.items():
                    tasks[t].append(args)
            self._tasks = {}

            await asyncio.gather(
                *[self.database.insert(*a) for a in tasks["insert"]],
                return_exceptions=True,
            )
            await asyncio.gather(
                *[self.database.update(*a) for a in tasks["update"]],
                return_exceptions=True,
            )
        log.debug("Completed pending writes to database have finished")