error MutatingWebhookConfiguration

I trying to add a annotation when a pod is created to allow cluster autoscaler delete an instance manager, but looks like I'm missing something.

webhook:

apiVersion: admissionregistration.k8s.io/v1beta1
kind: MutatingWebhookConfiguration
metadata:
  name: kube-annotate
  labels:
    app: kube-annotate
webhooks:
  - name: kube-annotate.example.com
    clientConfig:
      service:
        name: kube-annotate
        namespace: kube-annotate # NOTE: replace this with namespace where you deploy `kube-annotate`
        path: "/mutate"
      caBundle: <removed>
    rules:
      - operations: [ "CREATE" ]
        apiGroups: [""]
        apiVersions: ["v1"]
        resources: ["pods"]
    namespaceSelector:
      matchLabels:
        kube-annotate: 'enabled'

deployment:

`      - name: kube-annotate         
        image: docker.io/chickenzord/kube-annotate:latest
        imagePullPolicy: Always
        env:
        - name: TLS_ENABLED
          value: 'true'
        - name: TLS_CRT
          value: /var/run/secrets/tls/tlscert
        - name: TLS_KEY
          value: /var/run/secrets/tls/tlskey
        - name: RULES_FILE
          value: /etc/kube-annotate/rules.yaml
        - name: LOG_FORMAT
          value: json
        - name: LOG_LEVEL
          value: debug
`

config map:

`cat configmap.yaml 
apiVersion: v1
data:
  rules.yaml: |
    - selector:
        longhorn.io/component: instance-manager
      annotations:
        cluster-autoscaler.kubernetes.io/safe-to-evict: true
kind: ConfigMap
metadata:
  labels:
    app: kube-annotate
  name: kube-annotate-config
  namespace: kube-annotate
`

Error:

`kubectl logs -lapp=kube-annotate -n kube-annotate  -f
github.com/chickenzord/kube-annotate/vendor/github.com/urfave/negroni.middleware.ServeHTTP(0xe0bd80, 0xc00024ac60, 0xc0002554e0, 0x7fbed03e2020, 0xc00014e058, 0xc000332600)
        /go/src/github.com/chickenzord/kube-annotate/vendor/github.com/urfave/negroni/negroni.go:38 +0x9c
github.com/chickenzord/kube-annotate/vendor/github.com/urfave/negroni.(*Negroni).ServeHTTP(0xc00024da10, 0xe18ea0, 0xc00031c380, 0xc000332600)
        /go/src/github.com/chickenzord/kube-annotate/vendor/github.com/urfave/negroni/negroni.go:96 +0xee
net/http.serverHandler.ServeHTTP(0xc00026ab60, 0xe18ea0, 0xc00031c380, 0xc000332600)
        /usr/local/go/src/net/http/server.go:2741 +0xab
net/http.(*conn).serve(0xc00032c140, 0xe19ba0, 0xc000262680)
        /usr/local/go/src/net/http/server.go:1847 +0x646
created by net/http.(*Server).Serve
        /usr/local/go/src/net/http/server.go:2851 +0x2f5
{"level":"info","msg":"starting kube-annotate version 0.3.4 (7291937)","time":"2021-04-09T18:42:48Z"}
{"level":"info","msg":"loaded 1 rule(s) from /etc/kube-annotate/rules.yaml","time":"2021-04-09T18:42:48Z"}
{"level":"info","msg":"internal server is listening on :8081","time":"2021-04-09T18:42:48Z"}
{"level":"info","msg":"API server is listening on :8443","time":"2021-04-09T18:42:48Z"}
{"level":"debug","msg":"API server TLS is enabled","time":"2021-04-09T18:42:48Z"}
{"level":"info","msg":"starting kube-annotate version 0.3.4 (7291937)","time":"2021-04-09T18:42:48Z"}
{"level":"info","msg":"loaded 1 rule(s) from /etc/kube-annotate/rules.yaml","time":"2021-04-09T18:42:48Z"}
{"level":"info","msg":"internal server is listening on :8081","time":"2021-04-09T18:42:48Z"}
{"level":"info","msg":"API server is listening on :8443","time":"2021-04-09T18:42:48Z"}
{"level":"debug","msg":"API server TLS is enabled","time":"2021-04-09T18:42:48Z"}
`

Any ideas?

chickenzord / kube-annotate

error MutatingWebhookConfiguration #2