String cannot represent value: { success: false, status_code: 34, status_message: “The resource you requested could not be found. } GraphQL Error

Anyone please helppppp!!! I am trying to use TMDB movie api to post a rating, check out the link here for their docs:https://developer.themoviedb.org/reference/movie-add-rating, however i face an issue that it keeps showing me the below error when i implement to Graphql code for Mutation, how do i solve it:

"errors": [
    {
      "message": "String cannot represent value: { success: false, status_code: 34, status_message: "The resource you requested could not be found." }",
      "locations": [
        {
          "line": 4,
          "column": 5
        }
      ],
      "path": [
        "addMovieRatings",
        "message"
      ],
      "extensions": {
        "code": "INTERNAL_SERVER_ERROR",
        "stacktrace": [
          "GraphQLError: String cannot represent value: { success: false, status_code: 34, status_message: "The resource you requested could not be found." }",
          "    at GraphQLScalarType.serialize 

here is my 3 code files:
schema.js:

type Rating {
    id: ID!
    rating: Float!
  }

  type AddMovieRatingsResponse {
    code: Int!
    success: Boolean!
    message: String!
    rating: Rating
  }

  type Mutation {
    addMovieRatings(id: ID!, rating: Float!): AddMovieRatingsResponse!
  }

movie-api.js:

class MovieAPI extends RESTDataSource {
  baseURL = `https://api.themoviedb.org/3/`;
  async addMovieRatings(id, rating) {
    const response = await this.patch(
      `movie/${id}/rating?api_key=${process.env.API_KEY}`,
      { rating }
    );
    return response;
  }
}

module.exports = MovieAPI;

resolvers.js:

const resolvers = {
Mutation: {
    addMovieRatings: async (_, { id, rating }, { dataSources }) => {
      try {
        const result = await dataSources.movieAPI.addMovieRatings(id, rating);
        console.log(result);
        return {
          code: 200,
          success: true,
          message: `Successfully added rating for movie with id: ${id}`,
          rating: result.rating,
        };
      } catch (err) {
        return {
          code: err.extensions.response.status,
          success: false,
          message: err.extensions.response.body,
          rating: null,
        };
      }
    },
  },
}