Getting error while trying to take snapshot using curator

I am getting the below error, while taking snapshot using Curator:
Failed to complete action: snapshot. <class 'curator.exceptions.ActionError'>: Cannot snapshot indices to missing repository: xxxx

Here I am using GCS bucket name in the field of repository. Below is the curator-config:

actions:

    1:

      action: snapshot

      description: Taking snapshots 

      options:

        repository: es-backup-buckett

        name: cuartor-snapshot

      filters:

      - filtertype: pattern

        kind: prefix

        value: facebook