title: Getting `TypeError: __new__() got an unexpected keyword argument 'deny_new' even though Discord.py is on 1.4.1
body: <p>I'm trying to deploy a python bot to Discord via the heroku server, however I keep getting the <code>TypeError: __new__() got an unexpected keyword argument 'deny_new'</code> error when trying to deploy. Here are my full Heroku logs:</p>
  <pre><code>2020-08-16T20:25:13.659787+00:00 heroku[worker.1]: State changed from crashed to starting
  2020-08-16T20:25:16.913818+00:00 heroku[worker.1]: Starting process with command `python3 bot.py`
  2020-08-16T20:25:17.587024+00:00 heroku[worker.1]: State changed from starting to up
  2020-08-16T20:25:19.550960+00:00 app[worker.1]: Traceback (most recent call last):
  2020-08-16T20:25:19.550974+00:00 app[worker.1]: File &quot;bot.py&quot;, line 340, in &lt;module&gt;
  2020-08-16T20:25:19.551390+00:00 app[worker.1]: bot.run(CONFIG['bot_token'])
  2020-08-16T20:25:19.551394+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/client.py&quot;, line 640, in run
  2020-08-16T20:25:19.551800+00:00 app[worker.1]: return future.result()
  2020-08-16T20:25:19.551801+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/client.py&quot;, line 621, in runner
  2020-08-16T20:25:19.552173+00:00 app[worker.1]: await self.start(*args, **kwargs)
  2020-08-16T20:25:19.552174+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/client.py&quot;, line 585, in start
  2020-08-16T20:25:19.552515+00:00 app[worker.1]: await self.connect(reconnect=reconnect)
  2020-08-16T20:25:19.552535+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/client.py&quot;, line 499, in connect
  2020-08-16T20:25:19.552848+00:00 app[worker.1]: await self._connect()
  2020-08-16T20:25:19.552851+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/client.py&quot;, line 463, in _connect
  2020-08-16T20:25:19.553175+00:00 app[worker.1]: await self.ws.poll_event()
  2020-08-16T20:25:19.553178+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/gateway.py&quot;, line 471, in poll_event
  2020-08-16T20:25:19.553485+00:00 app[worker.1]: await self.received_message(msg)
  2020-08-16T20:25:19.553509+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/gateway.py&quot;, line 425, in received_message
  2020-08-16T20:25:19.553801+00:00 app[worker.1]: func(data)
  2020-08-16T20:25:19.553802+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/state.py&quot;, line 750, in parse_guild_create
  2020-08-16T20:25:19.554217+00:00 app[worker.1]: guild = self._get_create_guild(data)
  2020-08-16T20:25:19.554239+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/state.py&quot;, line 725, in _get_create_guild
  2020-08-16T20:25:19.554648+00:00 app[worker.1]: guild._from_data(data)
  2020-08-16T20:25:19.554649+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/guild.py&quot;, line 296, in _from_data
  2020-08-16T20:25:19.554889+00:00 app[worker.1]: self._sync(guild)
  2020-08-16T20:25:19.554892+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/guild.py&quot;, line 323, in _sync
  2020-08-16T20:25:19.555147+00:00 app[worker.1]: self._add_channel(TextChannel(guild=self, data=c, state=self._state))
  2020-08-16T20:25:19.555186+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/channel.py&quot;, line 107, in __init__
  2020-08-16T20:25:19.555394+00:00 app[worker.1]: self._update(guild, data)
  2020-08-16T20:25:19.555394+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/channel.py&quot;, line 131, in _update
  2020-08-16T20:25:19.555575+00:00 app[worker.1]: self._fill_overwrites(data)
  2020-08-16T20:25:19.555575+00:00 app[worker.1]: File &quot;/app/.heroku/python/lib/python3.8/site-packages/discord/abc.py&quot;, line 294, in _fill_overwrites
  2020-08-16T20:25:19.555815+00:00 app[worker.1]: self._overwrites.append(_Overwrites(id=overridden_id, **overridden))
  2020-08-16T20:25:19.555864+00:00 app[worker.1]: TypeError: __new__() got an unexpected keyword argument 'deny_new'
  2020-08-16T20:25:19.754714+00:00 heroku[worker.1]: Process exited with status 1
  2020-08-16T20:25:19.797906+00:00 heroku[worker.1]: State changed from up to crashed
  2020-08-16T20:25:22.000000+00:00 app[api]: Build succeeded
  </code></pre>
  <p>I've been looking around for fixes, but I can't seem to get it to work. I've upgraded my discord.py library to 1.4.1, as well as added an alias, still nothing. Any help would be greatly appreciated!</p>