import traceback

...

@commands.Cog.listener()
async def on_flamecogs_game_error(self, game, error):
    chan = self.bot.get_guild(389832888889245697).get_channel(495722437997232148)
    stack = ''.join(traceback.TracebackException.from_exception(error).format())
    msg = (
        f'<@!145519400223506432>\n'
        f'```ini\n[Error in a FlameCogs game!]\n'
        f'Game    = {game.__class__.__name__}\n'
        f'Guild   = {game.ctx.guild.name}\n'
        f'Channel = {game.ctx.channel.name}\n```'
        f'```py\n{stack}\n'
    )
    await chan.send(msg[:1997] + '```')