Varnish SLS Failed

edge_1:
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          ID: varnish_repo
    Function: pkgrepo.managed
        Name: deb http://repo.varnish-cache.org/ubuntu/ xenial varnish-3.0
      Result: False
     Comment: Failed to configure repo 'deb http://repo.varnish-cache.org/ubuntu/ xenial varnish-3.0': W: The repository 'http://repo.varnish-cache.org/ubuntu xenial Release' does not have a Release file.
              E: Failed to fetch http://repo.varnish-cache.org/ubuntu/dists/xenial/varnish-3.0/binary-amd64/Packages  404  Not Found
              E: Failed to fetch http://repo.varnish-cache.org/ubuntu/dists/xenial/varnish-3.0/binary-i386/Packages  404  Not Found
              E: Some index files failed to download. They have been ignored, or old ones used instead.
     Started: 02:26:40.003921
    Duration: 7797.131 ms
     Changes:
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          ID: varnish
    Function: pkg.installed
      Result: False
     Comment: One or more requisite failed: varnish.repo.varnish_repo
     Started:
    Duration:
     Changes:
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          ID: /etc/default/varnish
    Function: file.managed
      Result: False
     Comment: One or more requisite failed: varnish.varnish
     Started:
    Duration:
     Changes:
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          ID: /etc/varnish/default.vcl
    Function: file.managed
      Result: False
     Comment: One or more requisite failed: varnish.varnish
     Started:
    Duration:
     Changes:
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          ID: /etc/varnish/absent.vcl
    Function: file.absent
      Result: False
     Comment: One or more requisite failed: varnish.varnish
     Started:
    Duration:
     Changes:
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          ID: varnish
    Function: service.running
      Result: False
     Comment: One or more requisite failed: varnish.varnish, varnish.conf./etc/varnish/default.vcl, varnish.conf./etc/varnish/absent.vcl, varnish.conf./etc/default/varnish
     Started:
    Duration:
     Changes:

Summary for edge_1
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Succeeded: 0
Failed:    6
------------
Total states run:     6
Total run time:   7.797 s