Error Message

The security token included in the request is invalid

Problem

This happens when the AWS credentials used for your Serverless command are invalid. Or if they have not been configured on your machine.

Solution

Double-check your credentials. Or you can create a new pair of credentials. You can follow the chapter on creating and IAM user over on Serverless Stack.

If you are trying to set up your local machine, run aws configure to set your credentials up.