Lambda function not calling S3 bucket upload - amazon-web-services

Question

My Lambda function does not call the S3 upload function where it is supposed to send a URL back that will be assigned to the DynamoDB database. I can't seem to pin-point what's wrong here. I have tried to just call the Lambda upload to S3 function without the rest of the code and it work's fine.
const AWS = require('aws-sdk');
const s3 = new AWS.S3();
const BUCKET_NAME = 'BUCKET_NAME';
const dynamo = new AWS.DynamoDB.DocumentClient();
exports.handler = async (event, context) => {
let body;
let statusCode = 200;
const uploadFileToS3 = async (fileBinary) => {
try {
const base64File = fileBinary;
const decodedFile = Buffer.from(
base64File.replace(/^data:image\/\w+;base64,/, ''),
'base64'
);
const params = {
Bucket: BUCKET_NAME,
Key: `images/${new Date().toISOString()}.jpeg`,
Body: decodedFile,
ContentType: 'image/jpeg',
};
const uploadResult = await s3.upload(params).promise();
console.log(uploadResult)
return uploadResult;
} catch (e) {
console.error(e);
}
};
try {
switch (event.routeKey) {
case 'PUT /items':
let requestJSON = JSON.parse(event.body);
const fileURL = await uploadFileToS3(requestJSON.itemPicture);
await dynamo
.put({
TableName: 'TABLE_NAME',
Item: {
itemId: requestJSON.itemId,
userId: requestJSON.userId,
itemTitle: requestJSON.itemTitle,
itemDesc: requestJSON.itemDesc,
itemLocation: requestJSON.itemLocation,
itemPrice: requestJSON.itemPrice,
itemPicture: fileURL,
},
})
.promise();
body = `Put item ${requestJSON.itemId}`;
break;
default:
throw new Error(`Unsupported route: ` + `${event.routeKey}`);
}
} catch (err) {
statusCode = 400;
body = err.message;
} finally {
body = JSON.stringify(body);
}
return {
statusCode,
body,
headers,
};
};