Due to a new AWS_SDK version only the following ACCESS KEY ID and SECRETS are allowed: ` DynamoDB local version 2.0.0 and greater AWS_ACCESS_KEY_ID can contain the only letters (A–Z, a–z) and numbers (0–9).` [Stackoverflow thread](https://stackoverflow.com/questions/76592141/aws-js-sdk-suddenly-throws-the-access-key-id-or-security-token-is-invalid) I've already created a PR to fix this issue: https://github.com/99x/serverless-dynamodb-local/pull/298