Liveness StartFaceLivenessSession Validation Error

I am trying to get start with Aws Liveness check, I found quite a few good guides, this one in particular. https://ui.docs.amplify.aws/react/connected-components/liveness

I managed to get my backend up and running and creating sessions, however the liveness check errors when it calls the StartFaceLivenessSession

The error I get is this:

{
    "name": "ValidationException",
    "$fault": "client",
    "$metadata": {},
    "message": "Request has invalid parameters"
}

The error class seems to be this one RekognitionStreamingServiceException

However there is no way to figure out what the error is. I double checked the bucket name and region, the video format should ok since all that configuration was made by aws amplify

I cant find a way to check the session or anything related to it