"template not found"

[matoszz]

I was trying to roll through your example docs and when submitting the workflow ran into " Failed: invalid spec: templates.main.steps[0].setup-notifications template 'hermes-setup' type is unknown" I'm using the following spec:

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: notifications-test-
spec:
  entrypoint: main
  templates:
    - name: main
      steps:
        - - name: setup-notifications
            template: hermes-setup

        - - name: pre-notification
            template: hermes-notify
            arguments:
              parameters:
                - name: message
                  value: "Deployment started :hourglass_flowing_sand:"

        - - name: hello
            template: hello

        - - name: post-notification
            template: hermes-notify
            arguments:
              parameters:
                - name: message
                  value: "Deployment succeeded :white_check_mark:"

    - name: hermes-setup
      plugin:
        hermes:
          setup:
            alias: default
            service: slack
            config:
              token: slack-secret-hermes
              icon_emoji: ":rocket:"

    - name: hermes-notify
      inputs:
        parameters:
          - name: message
      plugin:
        hermes:
          notify:
            target: default
            template: hermes-template-slack-default
            config:
              channel: cerberus
            context:
              message: "{{`{{inputs.parameters.message}}`}}"
              app: hermes
              env: prod
              revision_sha: "deadbeef"
              revision_url: "https://google.com"
              log_url: "https://google.com"

    - name: hello
      container:
        image: docker/whalesay
        command: [cowsay]
        args: ["hello world"]

any idea why it doesn't recognize the templates?