future: <Task finished coro=<on_player_play() done, defined at /opt/MusicBot/musicbot/bot.py:568> exception=NotFound('NOT FOUND (status code: 404): Unknown Message',)>
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/asyncio/tasks.py", line 239, in _step
    result = coro.send(value)
  File "/opt/MusicBot/musicbot/bot.py", line 611, in on_player_play
    await self.add_reaction(self.server_specific_data[channel.server]['last_np_msg'], "\u2764")
  File "/opt/MusicBot/musicbot/bot.py", line 636, in _update_now_playing_async
    newmsg = 'Now playing in %s: **%s**\n`%s`\n%s `%s`' % (
  File "/usr/local/lib/python3.5/site-packages/discord/client.py", line 1378, in edit_message
    data = yield from self.http.edit_message(message.id, channel.id, content, guild_id=guild_id)
  File "/usr/local/lib/python3.5/site-packages/discord/http.py", line 135, in request
    raise NotFound(r, data)
discord.errors.NotFound: NOT FOUND (status code: 404): Unknown Message


-- New version uploaded, same error -- 

future: <Task finished coro=<on_player_play() done, defined at /opt/MusicBot/musicbot/bot.py:568> exception=NotFound('NOT FOUND (status code: 404): Unknown Message',)>
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/asyncio/tasks.py", line 239, in _step
    result = coro.send(value)
  File "/opt/MusicBot/musicbot/bot.py", line 611, in on_player_play
    await self.add_reaction(self.server_specific_data[channel.server]['last_np_msg'], "\u2764")
  File "/opt/MusicBot/musicbot/bot.py", line 636, in _update_now_playing_async
    if (percentage < 1 / progress_bar_length * i):
  File "/usr/local/lib/python3.5/site-packages/discord/client.py", line 1378, in edit_message
    data = yield from self.http.edit_message(message.id, channel.id, content, guild_id=guild_id)
  File "/usr/local/lib/python3.5/site-packages/discord/http.py", line 135, in request
    raise NotFound(r, data)
discord.errors.NotFound: NOT FOUND (status code: 404): Unknown Message