As part of your organization's cloud modernization strategy, application teams are migrating workloads to Google Kubernetes Engine (GKE) on Google Cloud. These GKE clusters are deployed in service projects connected to a Shared VPC . The teams have already tested their applications successfully in sandbox environments. However, during the production rollout, you observed that GKE clusters fail to create nodes , even though developers can successfully launch Compute Engine instances . To unblock the GKE cluster creation process, what should you do?