开源版polardb创建集群备份报错

Error from server (InternalError): error when creating "pxc-backup.yaml": Internal error occurred: failed calling webhook "polardbxbackup-validate.polardbx.aliyun.com": failed to call webhook: Post "https://kubernetes.default.svc:443/apis/admission.polardbx.aliyun.com/v1/validate-polardbx-aliyun-com-v1-polardbxbackup?timeout=10s": context deadline exceeded

kubectl get pxc pxc-product
NAME GMS CN DN CDC COLUMNAR PHASE DISK AGE
pxc-product 1/1 3/3 2/2 3/3 - Running 101.0 GiB 10d8h

pxc-backup.yaml

apiVersion: polardbx.aliyun.com/v1
kind: PolarDBXBackup
metadata:
name: pxcbackup-cluster-test
spec:
cluster:
name: pxc-product
retentionTime: 240h
storageProvider:
storageName: sftp
sink: default
preferredBackupRole: follower