TypeError: Vererbung einer Klasse von der URL ist verboten

Ich stoße auf diesen Fehler, wenn ich versuche, einen Bot zu starten, den ich für Discord erstellt habe. Dies trat nach dem Herunterladen einiger Module auf. Gibt es eine Möglichkeit, dies zu beheben?

Traceback (most recent call last):
  File "C:\Users\Jeriel\Desktop\JerryBot\run.py", line 1, in <module>
    import discord
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\discord\__
init__.py", line 20, in <module>
    from .client import Client, AppInfo
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\discord\cl
ient.py", line 30, in <module>
    from .guild import Guild
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\discord\gu
ild.py", line 39, in <module>
    from .channel import *
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\discord\ch
annel.py", line 31, in <module>
    from .webhook import Webhook
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\discord\we
bhook.py", line 27, in <module>
    import aiohttp
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\aiohttp\__
init__.py", line 6, in <module>
    from .client import *  # noqa
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\aiohttp\cl
ient.py", line 15, in <module>
    from . import connector as connector_mod
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\aiohttp\co
nnector.py", line 17, in <module>
    from .client_proto import ResponseHandler
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\aiohttp\cl
ient_proto.py", line 6, in <module>
    from .http import HttpResponseParser, StreamWriter
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\aiohttp\ht
tp.py", line 8, in <module>
    from .http_parser import (HttpParser, HttpRequestParser, HttpResponseParser,

  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\aiohttp\ht
tp_parser.py", line 15, in <module>
    from .http_writer import HttpVersion, HttpVersion10
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\aiohttp\ht
tp_writer.py", line 304, in <module>
    class URL(yarl.URL):
  File "C:\Users\Jeriel\AppData\Roaming\Python\Python36\site-packages\yarl\__ini
t__.py", line 230, in __init_subclass__
    "is forbidden".format(cls))
TypeError: Inheritance a class <class 'aiohttp.http_writer.URL'> from URL is for
bidden