Error while creating Certificate Authority certificate: "MissingRegion: could not find region configuration"

[mug3n451]

Hi, i'm trying to create a CA for cert-manager by using AWS KMS key. I have followed the guide but when creating the KMIssuer i have this erro on the controller manager:

ERROR   controllers.kmsissuer_controller        Failed to generate the Certificate Authority Certificate      
        {"name": "kms-issuer", "namespace": "cert-manager", "error": "MissingRegion: could not find region configuration"}
github.com/go-logr/zapr.(*zapLogger).Error
        /go/pkg/mod/github.com/go-logr/[email protected]/zapr.go:132
github.com/Skyscanner/kms-issuer/controllers.(*KMSIssuerReconciler).manageFailure
        /workspace/controllers/kmsissuer_controller.go:207
github.com/Skyscanner/kms-issuer/controllers.(*KMSIssuerReconciler).Reconcile
        /workspace/controllers/kmsissuer_controller.go:99
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler
        /go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:298
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem
        /go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:253
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func1.2
        /go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:216
k8s.io/apimachinery/pkg/util/wait.JitterUntilWithContext.func1
        /go/pkg/mod/k8s.io/[email protected]/pkg/util/wait/wait.go:185
k8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1
        /go/pkg/mod/k8s.io/[email protected]/pkg/util/wait/wait.go:155
k8s.io/apimachinery/pkg/util/wait.BackoffUntil
        /go/pkg/mod/k8s.io/[email protected]/pkg/util/wait/wait.go:156
k8s.io/apimachinery/pkg/util/wait.JitterUntil
        /go/pkg/mod/k8s.io/[email protected]/pkg/util/wait/wait.go:133
k8s.io/apimachinery/pkg/util/wait.JitterUntilWithContext
        /go/pkg/mod/k8s.io/[email protected]/pkg/util/wait/wait.go:185
k8s.io/apimachinery/pkg/util/wait.UntilWithContext
        /go/pkg/mod/k8s.io/[email protected]/pkg/util/wait/wait.go:99

My yaml file is:

apiVersion: cert-manager.skyscanner.net/v1alpha1
kind: KMSIssuer
metadata:
  name: kms-issuer
  namespace: default
spec:
  keyId: XXXXXXXXXX # The KMS key id or alias
  commonName: LabCa # The common name for the root certificate
  duration: 87600h # 10 years`

Could you help me to solve the issue, please?

Thanks Cristian