    async def ignore_global(self, ctx, command: str.lower):
        """
        Globally ignore or unignore the specified action.

        The bot will no longer respond to these actions.
        """
        try:
            await self.config.get_raw("custom", command)
        except KeyError:
            await self.config.set_raw("custom", command, value=None)
        else:
            await self.config.clear_raw("custom", command)
        await ctx.tick()

The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.