I am writing a bot for VK, it gives an error, the method is not for that type of conversation. Which one should be used?

Question

Bots

vk_api.exceptions.ApiError: [5] User authorization failed: method is unavailable with group auth.

import requests
import vk_api
from vk_api.longpoll import VkLongPoll,VkEventType



def answer(user_id, messege):
    vk_session.method('message.send',{'user.id':user_id,'message':messege})
#Токен там нормальный
vk_session = vk_api.VkApi(token='1')

longpool= VkLongPoll(vk_session)

for event in longpool.listen():
    if event.type==VkEventType.MESSAGE_NEW:
        if event.to_me:
            request=event.text
            if request=="Привет":
                answer(event.user_id, "Дороу  ")