error while building reddit-clone using #graphql, #stepzen error is in mutation subreddit

[kantoash]

build timestamp with link https://www.youtube.com/watch?v=O0AhmAVzOo4&t=7425s
Error: Response not successful: Received status code 401
at new ApolloError (index.js?705b:29:1)
at eval (QueryManager.js?abc4:616:1)
at both (asyncMap.js?02ca:16:46)
at eval (asyncMap.js?02ca:9:57)
at new Promise ()
at Object.then (asyncMap.js?02ca:9:1)
at Object.eval [as error] (asyncMap.js?02ca:17:1)
at notifySubscription (module.js?1df4:137:1)
at onNotify (module.js?1df4:176:1)
at SubscriptionObserver.error (module.js?1df4:229:1)
at eval (iteration.js?9357:4:50)
at Array.forEach ()
at iterateObserversSafely (iteration.js?9357:4:1)
at Object.error (Concast.js?a770:36:43)
at notifySubscription (module.js?1df4:137:1)
at onNotify (module.js?1df4:176:1)
at SubscriptionObserver.error (module.js?1df4:229:1)
at eval (createHttpLink.js?da83:113:1)
queries code
`import { gql } from '@apollo/client';

export const GET_SUBREDDIT_BY_TOPIC = gqlquery MyQuery ($topic: String!) { getSubredditListByTopic(topic: $topic) { id topic created_at } };mutation codeimport { gql } from "@apollo/client";

export const ADD_POST = gqlmutation MyMutation( $body: String! $image: String! $Subreddit_id: ID! $title: String! $username: String! ) { insertPost( body: $body image: $image Subreddit_id: $Subreddit_id title: $title username: $username ) { body created_at id image Subreddit_id title username } };

export const ADD_SUBREDDIT = gqlmutation MyMutation($topic: String) { insertSubreddit(topic: $topic) { id topic created_at } } `` postqresql file code
type Query {
getSubredditList: [Subreddit]
@dbquery(
type: "postgresql"
schema: "public"
table: "Subreddit"
configuration: "postgresql_config"
)
getSubredditListByTopic(topic: String!): [Subreddit]
@dbquery(
type: "postgresql"
schema: "public"
query: """
select * from "Subreddit" where "topic" = $1
"""
configuration: "postgresql_config"
)

type Mutation {
"""
In this mutation example you can see how to do a mutation to insert data in the database.
"""

Removing Created at (created_at: String!)

insertPost(
image: String!
body: String!
Subreddit_id: ID!
title: String!
username: String!
): Post
@dbquery(
type: "postgresql"
schema: "public"
table: "post"
dml: INSERT
configuration: "postgresql_config"
)

insertSubreddit(topic: String!): Subreddit
@dbquery(
type: "postgresql"
schema: "public"
table: "Subreddit"
dml: INSERT
configuration: "postgresql_config"
)`

postBox code
`
try {
// Query for the subreddit topic...

  const {
    data: { getSubredditListByTopic },
  } =  await client.query({
    query: GET_SUBREDDIT_BY_TOPIC,
    variables: {
      topic: FormData.subreddit,
    }
  })

  const subredditExist = getSubredditListByTopic.length > 0;

  if (!subredditExist) {  
    // Create a subreddit...
    console.log('Subreddit is new! => creating a NEW subreddit!');
    
    const {data: { insertSubreddit: newSubreddit }} = await addSubreddit({
      variables: {
        topic: FormData.subreddit
      }
    })

    console.log(`Creating a Post ${FormData}`);
    const image = FormData.postImage || ''

    const {data: {insertPost: newPost}} = await addPost({
      variables: {
        body: FormData.postBody,
        image: image,
        subreddit_id: newSubreddit.id,
        title: FormData.postTitles,
        username: session?.user?.name
      }
    })
    
    console.log('New Post added',newPost);
    
  } else {
    // use existing subreddit...

    console.log('Using existing subrddit!');
    console.log(getSubredditListByTopic);
    
    
    const image = FormData.postImage || ''

    const {data: {insertPost: newPost}} = await addPost({
      variables: {
        body: FormData.postBody,
        image: image,
        subreddit_id: getSubredditListByTopic[0].id,
        title: FormData.postTitles,
        username: session?.user?.name
      }
    })
    
    console.log('New Post added',newPost);
  }

  // After the post has been added
  setValue('postBody','')
  setValue('postImage','')
  setValue('postTitles','')
  setValue('subreddit','')

  toast.success('New post Created!',{
    id: notification
  })`