Kubernetes Hard Way Process - Kube API server Kube -Scheduerl and Kube-controller Manger unit files are giving invalid Arguments message

I am working on building a kubernetes cluster using Vagrant from scratch by following mumshad kubernetes hardway proces. I have successfully done with the below areas,

  1. SSH connection
  2. Certificate Authority
  3. Certs for kube-api, scheduler, admin, sa, controller-manager and etcd…
  4. BootStrapped etcd … no issues
  5. While BootStrapping the Kube-api, kube-scheduler and kube-controller, I am getting the below error, I am unable to find/debug this message

Mar 09 19:32:27 master-1 systemd[1]: kube-scheduler.service: Main process exited, code=exited, status=2/INVALIDARGUMENT Mar 09 19:32:27 master-1 systemd[1]: kube-scheduler.service: Failed with result ‘exit-code’.

Here is my unit files, I am using the same unit files and I am getting the above error. Please share yoru suggestions