How to set snapshot？

[wanghe-fit2cloud]

My setup is:
...
snapshot:
bucket-name: ***
cron-schedule: '@every 2m'
scheduler-enabled: true
type: s3
image: upmcenterprises/elasticsearch-cron:0.0.4
repo-region: cn-north-1
repo-authentication:
access-key: ***
secret-key: ***
...

after the creation is completed, execute kubectl get po and find the pod with error message:
flag provided but not defined: -repo-type
Usage of elasticsearch-cron:
-action string
action to perform (e.g. Create repository or snapshot
-auth-password stirng
Authentication password
-auth-username stirng
Authentication username
-elastic-url string
full dns url to elasticsearch
-s3-bucket-name string
name of s3 bucket
-use-ssl
enable SSL or not (default true)

So, how do I configure the snapshot parameter? Thank you!