only chat with 1 client pls fix this

[wahyu25ridwan]

only chat with 1 client pls fix this

[PixHive]

await handler.callback(self.client, *args)
File "/home/ubuntu/YukkiChatBot/main.py", line 67, in mode_func
await mongo.group_off()
File "/home/ubuntu/YukkiChatBot/mongo.py", line 101, in group_off
return await modelist.delete_one({"chat_id": chat_id})
AttributeError: 'dict' object has no attribute 'delete_one'