Can't save db with objectstorage( Aliyun OSS)

[vCassius]

My config about objectstorage yam

apiVersion: v1
kind: Secret
metadata:
  name: thanos-objectstorage
  namespace: thanos
type: Opaque
stringData:
  thanos.yaml: |-
    type: ALIYUNOSS
    config:
      endpoint: "oss-cn-hangzhou.aliyuncs.com"
      bucket: "my-thanos"
      access_key_id: ""
      access_key_secret: ""

Question

• i have checked all pod logs, don't have any WARN or ERROR level
• i'm sure objectstoreage key and seecret right
• i can't find any files in my objectstorage(aliyun OSS)