Seems that the command tries to delete the resources which are already removed by deleting the namespaces
yinw-a01:harbor-cluster-operator yinw$ kubectl delete -f manifests/all-in-one.yaml
namespace "harbor-cluster-operator-system" deleted
namespace "harbor-operator-system" deleted
namespace "minio-operator" deleted
namespace "psql-operator-ns" deleted
namespace "redis-operator-ns" deleted
customresourcedefinition.apiextensions.k8s.io "harborclusters.goharbor.io" deleted
customresourcedefinition.apiextensions.k8s.io "harbors.goharbor.io" deleted
customresourcedefinition.apiextensions.k8s.io "tenants.minio.min.io" deleted
serviceaccount "minio-operator" deleted
serviceaccount "postgres-operator" deleted
serviceaccount "redisoperator" deleted
role.rbac.authorization.k8s.io "harbor-cluster-operator-leader-election-role" deleted
role.rbac.authorization.k8s.io "harbor-operator-leader-election-role" deleted
clusterrole.rbac.authorization.k8s.io "postgres-operator" deleted
clusterrole.rbac.authorization.k8s.io "postgres-pod" deleted
clusterrole.rbac.authorization.k8s.io "redisoperator" deleted
clusterrole.rbac.authorization.k8s.io "harbor-cluster-operator-manager-role" deleted
clusterrole.rbac.authorization.k8s.io "harbor-cluster-operator-proxy-role" deleted
clusterrole.rbac.authorization.k8s.io "harbor-operator-manager-role" deleted
clusterrole.rbac.authorization.k8s.io "harbor-operator-proxy-role" deleted
clusterrole.rbac.authorization.k8s.io "minio-operator-role" deleted
rolebinding.rbac.authorization.k8s.io "harbor-operator-leader-election-rolebinding" deleted
clusterrolebinding.rbac.authorization.k8s.io "postgres-operator" deleted
clusterrolebinding.rbac.authorization.k8s.io "redisoperator" deleted
clusterrolebinding.rbac.authorization.k8s.io "harbor-cluster-operator-manager-rolebinding" deleted
clusterrolebinding.rbac.authorization.k8s.io "harbor-cluster-operator-proxy-rolebinding" deleted
clusterrolebinding.rbac.authorization.k8s.io "harbor-operator-manager-rolebinding" deleted
clusterrolebinding.rbac.authorization.k8s.io "harbor-operator-proxy-rolebinding" deleted
clusterrolebinding.rbac.authorization.k8s.io "minio-operator-binding" deleted
mutatingwebhookconfiguration.admissionregistration.k8s.io "harbor-cluster-operator-mutating-webhook-configuration" deleted
mutatingwebhookconfiguration.admissionregistration.k8s.io "harbor-operator-mutating-webhook-configuration" deleted
validatingwebhookconfiguration.admissionregistration.k8s.io "harbor-cluster-operator-validating-webhook-configuration" deleted
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": rolebindings.rbac.authorization.k8s.io "harbor-cluster-operator-leader-election-rolebinding" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": configmaps "harbor-operator-operator-config-6g2hb7ttdf" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": configmaps "postgres-operator" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": services "harbor-cluster-operator-controller-manager-metrics-service" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": services "harbor-cluster-operator-webhook-service" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": services "harbor-operator-controller-manager-metrics-service" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": services "harbor-operator-webhook-service" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": services "operator" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": services "postgres-operator" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": deployments.apps "harbor-cluster-operator-controller-manager" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": deployments.apps "harbor-operator-controller-manager" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": deployments.apps "minio-operator" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": deployments.apps "postgres-operator" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": deployments.apps "redisoperator" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": certificates.cert-manager.io "harbor-cluster-operator-serving-cert" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": certificates.cert-manager.io "harbor-operator-serving-cert" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": issuers.cert-manager.io "harbor-cluster-operator-selfsigned-issuer" not found
Error from server (NotFound): error when deleting "manifests/all-in-one.yaml": issuers.cert-manager.io "harbor-operator-selfsigned-issuer" not found
Seems that the command tries to delete the resources which are already removed by deleting the namespaces