pycord: AttributeError: 'NoneType' object has no attribute 'get_thread'

Summary

When upgrading from 2.0.0-rc.1 to 2.0.0, I’m getting this error.

Reproduction Steps

My code calls channel.history() and iterates over messages in the channel. This is the trailing end of the stack trace I get:

    async for message in channel.history(limit=None, after=history_after):
  File "/home/circleci/.cache/pypoetry/virtualenvs/juniorguru-3aSsmiER-py3.8/lib/python3.8/site-packages/discord/iterators.py", line 125, in __anext__
    return await self.next()
  File "/home/circleci/.cache/pypoetry/virtualenvs/juniorguru-3aSsmiER-py3.8/lib/python3.8/site-packages/discord/iterators.py", line 325, in next
    await self.fill_messages()
  File "/home/circleci/.cache/pypoetry/virtualenvs/juniorguru-3aSsmiER-py3.8/lib/python3.8/site-packages/discord/iterators.py", line 359, in fill_messages
    await self.messages.put(self.state.create_message(channel=channel, data=element))
  File "/home/circleci/.cache/pypoetry/virtualenvs/juniorguru-3aSsmiER-py3.8/lib/python3.8/site-packages/discord/state.py", line 1693, in create_message
    return Message(state=self, channel=channel, data=data)
  File "/home/circleci/.cache/pypoetry/virtualenvs/juniorguru-3aSsmiER-py3.8/lib/python3.8/site-packages/discord/message.py", line 764, in __init__
    ref.resolved = self.__class__(channel=chan, data=resolved, state=state)  # type: ignore
  File "/home/circleci/.cache/pypoetry/virtualenvs/juniorguru-3aSsmiER-py3.8/lib/python3.8/site-packages/discord/message.py", line 776, in __init__
    self.thread = Thread(guild=self.guild, state=self._state, data=data["thread"])
  File "/home/circleci/.cache/pypoetry/virtualenvs/juniorguru-3aSsmiER-py3.8/lib/python3.8/site-packages/discord/threads.py", line 160, in __init__
    self._from_data(data)
  File "/home/circleci/.cache/pypoetry/virtualenvs/juniorguru-3aSsmiER-py3.8/lib/python3.8/site-packages/discord/threads.py", line 190, in _from_data
    if thread := self.guild.get_thread(self.id) and data.pop("_invoke_flag", False):
AttributeError: 'NoneType' object has no attribute 'get_thread'

Minimal Reproducible Code

No response

Expected Results

Pycord should be able to instantiate and return the Message object.

Actual Results

Pycord crashes as self.guild probably isn’t set.

Intents

guilds, members, message_content

System Information

• Python v3.8.7-final
• py-cord v2.0.0-candidate
  • py-cord pkg_resources: v2.0.0rc1
• aiohttp v3.8.1
• system info: Darwin 21.5.0 Darwin Kernel Version 21.5.0: Tue Apr 26 21:08:29 PDT 2022; root:xnu-8020.121.3~4/RELEASE_ARM64_T8101

Checklist

• I have searched the open issues for duplicates.
• I have shown the entire traceback, if possible.
• I have removed my token from display, if visible.

Additional Context

Possibly related to @baronkobama’s https://github.com/Pycord-Development/pycord/pull/1447