Invalid Credentials provided during OpenShift Install

Issue

• I can't complete an install and see the following in the openshift-install.log file:

FATAL failed to fetch Terraform Variables: failed to fetch dependency of "Terraform Variables": failed to fetch dependency of "Bootstrap Ignition Config": failed to fetch dependency of "Master Machines": failed to generate asset "Platform Credentials Check": validate AWS credentials: checking install permissions: error gathering AWS credentials details: error querying username: InvalidClientTokenId: The security token included in the request is invalid.