!load <cog> crashes

[Drapersniper]

Tried to load a cog and getting an error on self._call_module_finalizers(lib, key) as "key" is not defined in https://github.com/Cog-Creators/Red-DiscordBot/blob/V3/develop/redbot/core/bot.py, line 256 : NameError: name 'key' is not defined

async def load_extension(self, spec: ModuleSpec):
    # NB: this completely bypasses `discord.ext.commands.Bot._load_from_module_spec`
    name = spec.name.split(".")[-1]
    if name in self.extensions:
        raise errors.PackageAlreadyLoaded(spec)

    lib = spec.loader.load_module()
    if not hasattr(lib, "setup"):
        del lib
        raise discord.ClientException(f"extension {name} does not have a setup function")

    try:
        if asyncio.iscoroutinefunction(lib.setup):
            await lib.setup(self)
        else:
            lib.setup(self)
    except Exception as e:
        self._remove_module_references(lib.__name__)
        self._call_module_finalizers(lib, key)
        raise errors.ExtensionFailed(key, e) from e
    else:
        self._BotBase__extensions[name] = lib