Elastic search 1.2.1: Snapshot not creating

I am runnign this command

http://localhost:9200/_snapshot/titan_es_backup?pretty

output

{
  "titan_es_backup" : {
    "type" : "fs",
    "settings" : {
      "compress" : "true",
      "location" : "/home/manish/Softwares/DataBackUp/ES"
    }
  }
}

again this command

http://localhost:9200/_snapshot/titan_es_backup/snapshot_1?wait_for_completion=false

OUTPUT

{"error":"SnapshotMissingException[[titan_es_backup:snapshot_1] is 

missing]; nested:
FileNotFoundException[/home/manish/Softwares/DataBackUp/ES/snapshot-snapshot_1
(No such file or directory)]; ","status":404}

Where I am going wrong ?

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