Error: dynamodb cannot read properties of undefined
What's Causing This Error
This is an error that you may run into in the Node.js environment. You may face it locally or even in a Node.js Lambda function. There is no true cause for this error, but it is typically caused when trying to read an item from DynamoDB when nothing is returned from the query or scan.
Consider the snippet below.
const { Items = [] } = await documentClient.scan(scanParams).promise(); // will throw error if there is no error for 0th index. console.log(Items[0].id);
Solution: Here's How To Resolve It
Try a few of the solutions listed below to see if they will solve your error.
- Ensure that the item you're trying to read from DynamoDB exists. You can use the optional params -
item?.id
. - Ensure that you have implemented proper error handling to help your application recover from such errors.
Other Common DynamoDB Errors (with Solutions)
- dynamodb unable to execute http request
- dynamodb cannot read property 's' of undefined
- Boto3 DynamoDB KeyError
- DynamoDB Expression Not Null
- aws.dynamodb.documentclient is not a constructor
- dynamodb autoscaling not fast enough
- name key is not defined dynamodb
- is not authorized to perform dynamodb:* on resource
- cannot find module 'dynamodb-doc'
- failed to list tables not authorized dynamodb
- 'dynamodb' object has no attribute 'table'
- DynamoDB Internal Server Error
- ExpressionAttributeValues contains invalid value: One or more parameter values were invalid: An AttributeValue may not contain an empty string
- DynamoDB Update Not Working
- ConfigError: Missing region in config
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