https://ithelp.ithome.com.tw/articles/10254215
compute-system.iam.gserviceaccount.com needs to have [compute.instances.start,compute.instances.stop] permissions applied in order to perform this operation The control panel by default fails to operate. The above steps need to be followed. THis is not a good UI practice, when users do not know where to set up the permission By going to IAM -> manage roles -> add roles