localstack uses a DDB local v.1 for DynamoDB support. It will be deprecated by the end of 2024. Please, update your dependency to the latest v.2 version of DDB local. You can find more details here: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DynamoDBLocal.DownloadingAndRunning.html