vercel nextjs app with Dynamodb access denied on production.

[yasen002]

Hi,
I have a Nextjs app deployed on Vercel. When I run it locally, it doesn't have any error, but when I deploy it, it has access denied error.

This is how I set up my ddb_client
import { DynamoDBClient } from "@aws-sdk/client-dynamodb"; // Set the AWS Region. const REGION = "REGION"; //e.g. "us-east-1" // Create an Amazon DynamoDB service client object. const ddbClient = new DynamoDBClient({ accessKeyId: process.env.ACCESS_KEY, secretAccessKey: process.env.SECRET_KEY, region: process.env.REGION, // endpoint: "http://localhost:8000", }); export { ddbClient };

Here is the error on my vercel function real time logs:
`I have .env.local file with env variables on my localhost and added env variables through vercel dashboard.

error: AccessDeniedException: User: arn:aws:sts::00359*******:assumed-role/cloudwatch_logs_events_putter/..... is not authorized to perform: dynamodb:PutItem on resource: arn:aws:dynamodb:us-east-1:.........:table/table_name
......................................
{
__type: 'com.amazon.coral.service#AccessDeniedException',
'$fault': 'client',
'$metadata': {
httpStatusCode: 400,`

I used my admin IAM account to create a user with [AmazonDynamoDBFullAccess] permission.

In the page, I used js Fetch to call nextjs API:
const submitResponse = await fetch(${baseUrl}/api/form/submit, { method: 'POST', mode: 'cors', cache: 'no-cache', credentials: 'same-origin', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ formData })

I am not getting any errors locally, why am I getting errors on my vercel deployed app, has anyone had this error before?

[jedwards4044]

I am running into the same thing. Did you ever resolve this issue?

[yasen002]

I wasn't able to solve this. I think I ended up using Amplify or the newer version of AWS SDK.

[leerob]

I have an example here you can check out! https://github.com/leerob/nextjs-aws-dynamodb

[asfand987]

@jedwards4044 did you figure it out?

[asfand987]

All of a sudden my NextJS has started getting this, it was working completely fine for months before. Did not make any changes. Works fine on my local...

[amyegan]

Hey @asfand987. It could be an expired environment variable. That's the first thing I would check since you said it was working before. You might also want to compare your project with the example repo shared above.

If you need more help, please start a new discussion with more information about your project and the error message you see.