DynamoDB DocumentClient do not return any data after put operation

I'm testing a lambda using the serverless framework with the sls offline command, this lambda should connect to my local dynamoDB (initialized with a docker-compose image), and put a new data in Dynamo using aws-sdk, but I can never get the return of the put().promise() function, if I use the get function I don't get any return either .I checked and the data is being entered into dynamodb. Follow the code below

import ILocationData, { CreateLocationDTO } from '@domain/location/data/ILocationData';
import { LocationEntity } from '@domain/location/entities/LocationEntity';
import { uuid } from 'uuidv4';

import DynamoDBClient from './DynamoDBClient';

export default class LocationProvider extends DynamoDBClient implements ILocationData {
  private tableName = 'Locations';

  public async createLocation(data: CreateLocationDTO): Promise<LocationEntity> {
    const toCreateLocation: LocationEntity = {
      ...data,
      locationId: uuid(),
      hasOffers: false,
    };

    try {
      const location = await this.client
        .put({
          TableName: this.tableName,
          Item: toCreateLocation,
          ReturnValues: 'ALL_OLD',
        })
        .promise();

      console.log(location);

      return location.Attributes as LocationEntity;
    } catch (err) {
      console.log(err);
      return {} as LocationEntity;
    }
  }
}

DynamoDBClient.ts -> Class file

import * as AWS from 'aws-sdk';
import { DocumentClient } from 'aws-sdk/clients/dynamodb';

abstract class DynamoDBClient {
  public client: DocumentClient;
  private config = {};

  constructor() {
    if (process.env.IS_OFFLINE) {
      this.config = {
        region: process.env.DYNAMO_DB_REGION,
        accessKeyId: 'xxxx',
        secretAccessKey: 'xxxx',
        endpoint: process.env.DYNAMO_DB_ENDPOINT,
      };
    }

    this.client = new AWS.DynamoDB.DocumentClient(this.config);
  }
}

export default DynamoDBClient;