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 scan filter not working
- name key is not defined dynamodb
- DynamoDB ConditionalCheckFailedException
- DynamoDB FilterExpression Not Working
- DynamoDB Code Working In Node But Not SAM
- Conditional Update Error DynamoDB
- could not unmarshal the value dynamodb
- DynamoDB Internal Server Error
- DynamoDB Expression Not Null
- dynamodb could not instantiate class
- DynamoDB - The Security Token Included In The Request Is Invalid
- dynamodb: one or more parameter values were invalid: type mismatch for index key
- cannot find module 'dynamodb-doc'
- DynamoDB Errors InvalidSignatureException Signature Expired
- DynamoDB failedbatch
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