I have just finished building the react note app from aws.
https://aws.amazon.com/getting-started/hands-on/build-react-app-amplify-graphql/module-one/?nc1=h_ls
For practice purpose, I want to replace those functions:fecthNotes, createNotes and deleteNotes in App.js using lambda function. However, I am totally new to javascript and all the things I wrote are generated by chatGPT. I successfully replaced fecthNotes, but I meet some problems in createNotes.

import awsDynamoDB from '@aws-sdk/client-dynamodb';
import { v4 as uuidv4 } from 'uuid';

const { DynamoDBClient, PutCommand } = awsDynamoDB;

const client = new DynamoDBClient({ region: "us-east-2" });

export const handler = async (event) => {
    if (!event.body) {
        return {
            statusCode: 400,
            body: JSON.stringify({ message: "No data provided" }),
            headers: {
                "Content-Type": "application/json",
                "Access-Control-Allow-Origin": "*"
            }
        };
    }

    let data;
    try {
        data = JSON.parse(event.body);
    } catch (error) {
        return {
            statusCode: 400,
            body: JSON.stringify({ message: "Invalid JSON input", errorMessage: error.message }),
            headers: {
                "Content-Type": "application/json",
                "Access-Control-Allow-Origin": "*"
            }
        };
    }

    const { name, description, image } = data;

    const item = {
        id: uuidv4(),
        name,
        description,
        image,
        createdAt: new Date().toISOString()
    };

    const params = {
        TableName: 'Note-li2tepohrvffzahbnswzdygzae-dev',
        Item: item
    };

    try {
        await client.send(new PutCommand(params));
        return {
            statusCode: 200,
            body: JSON.stringify({ message: "Note created successfully", note: item }),
            headers: {
                "Content-Type": "application/json",
                "Access-Control-Allow-Origin": "*"
            }
        };
    } catch (error) {
        console.error('Error creating the note:', error);
        return {
            statusCode: 500,
            body: JSON.stringify({ message: "Failed to create the note", errorMessage: error.message, errorStack: error.stack }),
            headers: {
                "Content-Type": "application/json",
                "Access-Control-Allow-Origin": "*"
            }
        };
    }
};

{
“statusCode”: 500,
“body”: “{“message”:”Failed to create the note”,”errorMessage”:”PutCommand is not a constructor”,”errorStack”:”TypeError: PutCommand is not a constructorn at Runtime.handler (file:///var/task/index.mjs:50:27)n at Runtime.handleOnceNonStreaming (file:///var/runtime/index.mjs:1173:29)”}”,
“headers”: {
“Content-Type”: “application/json”,
“Access-Control-Allow-Origin”: “*”
}
}