VK removeChatUser в чем ошибка?

Question

[aniki1477]

В чем ошибка?

for event in longpoll.listen():
	if event.type == VkBotEventType.MESSAGE_NEW:
		if event.from_chat:

			id = event.chat_id
			msg = event.object.message['text'].lower()
                       #Забанить пользователя
			if msg == "/бан":
				vk_session.method("messages.removeChatUser", {"chat_id": event.object.peer_id - 2000000000,"member_id": event.obj.reply_message['from_id']})

File "E:\Python\bot_vk\Shtsirlits.py", line 60, in
vk_session.method("messages.removeChatUser", {"chat_id": event.object.peer_id - 2000000000,"member_id": event.obj.reply_message['from_id']})
TypeError: unsupported operand type(s) for -: 'NoneType' and 'int'