Метод сканирования Dynamodb, возвращающий нуль

const AWS = require('aws-sdk');
const dynamodb = new AWS.DynamoDB({ region: 'us-east-2', apiVersion: '2012-08-10' });
 
exports.handler = async (event, context, callback) => {
    // TODO implement
    const type = event.type;
    if (type === "all"){
        const params = {
            TableName: 'compare-yourself'
        };
        
        dynamodb.scan(params, function(err, data){
            if (err){
                console.info(err);
                callback(err);
            } else {
                console.info(data);
                console.info(type);
                callback(null, data);
            }
        });
    } else if (type === "single") {
        console.info(type);
        callback(null, "Just my Data");
    } else {
        callback(null, "Hello from Lambda!");
    }
};