authorized keys

 - name: add common user public keys
   become: yes
   authorized_key: user="{{ item.name }}"
                   key="{{ item.pubkeyfile }}"
                   state=present
    with_items:
      - { name: 'auser', pubkeyfile: "{{ var_adiamond_sskey }}" }
      - { name: 'buser', pubkeyfile: "https://github.com/buser.keys" }
      - { name: "{{system_default_user}}", pubkeyfile: "{{var_deploy_sshkey }}" }
      
      
      
      
      ... Gives me an unknown error: 
      
      [DEPRECATION WARNING]: Skipping task due to undefined Error, in the future this will be a fatal error.. This feature will be removed in a future release. Deprecation warnings can be disabled by
setting deprecation_warnings=False in ansible.cfg.