Error: Namespace required

resource "kubernetes_manifest" "test-configmap" {
 manifest = {
   "apiVersion" = "v1"
   "kind"       = "ConfigMap"
   "metadata" = {
     "name"      = "test-config"
     "namespace" = "default"
   }
   "data" = {
     "foo" = "bar"
   }
 }
}

Terraform provider: Kubernetes, kubernetes_storage_class_v1, kubernetes_persistent_volume, kubernetes_manifest, kubernetes daemonset, kubernetes_service, kubernetes_namespace, kubernetes_service_account, kubernetes_secret, kubernetes_namespace, kubernetes_service_account_v1, kubernetes_secret_v1, kubernetes horizontal pod autoscaler v1, kubernetes_ingress_v1, kubernetes_persistent_volume_claim_v1