AWS authentication requires a valid Date or x-amz-date header

when I snapshots to AWS S3. Has 3 data nodes & 3 master nodes. all 6 nodes yml config aws plugin & aws s3 keys. Thanks in advance.

Is this an error or something that you are seeing?

yes . it is an error. not able to backup es to S3 due to this. My current environment as below ;

  1. java version "1.8.0_66"
  2. ES 1.5.1
  3. 4xClients, 3xMaster nodes & 4xdata nodes
  4. yml config to all nodes "xxxx" "xxx" "ap-southeast-1"
    plugin.mandatory: "cloud-aws" = v2.5.1 "xxxxxxxxxx"