Streamline-Card not getting any Template

Hey,
I’ve tried some days now to get the Streamline-Card templates working

When entering the template into dashboard raw all works, when entering in a YAML the template is not found. I have no more idea what I’m missing, any hint?

I have in /homeassistant/configuration.yaml:

# Includes
automation: !include automations.yaml
scene: !include scenes.yaml
streamline_templates: !include_dir_named streamline_templates/

In the template folder, /homeassistant/streamline_templates/debug.yaml

default:
  - light_icon: mdi:ceiling-light
card:
  type: custom:bubble-card
  name: "[[room_name]] Light"
  icon: "[[light_icon]]"
  entity: "[[light_entity]]"

When loading the card with

type: custom:streamline-card
template: debug

I get:

The template "debug" doesn't exist in streamline_templates
type: custom:streamline-card
template: debug

HomeAssisten Supervised installed on Homeassistent OS
Streamline card is avalible in dashboard resources
Already tried different path like
streamline_templates: !include_dir_named /streamline_templates/
streamline_templates: !include_dir_named ./streamline_templates/
streamline_templates: !include_dir_named …/streamline_templates/

In developer → template
I get

'streamline_templates' is undefined

When entering:

{{ streamline_templates.debug }}

Hi,
I also have problems getting this to work. Maybe you can try

streamline_templates: !include_dir_merge_named streamline_templates/

I tried lots of things already, but non is working, yet.
The documentation is a bit unclear for me. It’s not clear where to put which directory and which file exactly.

The error I’m getting while checking the configuration is:

Integration error: streamline_templates - Integration ‘streamline_templates’ not found.

Not using this card, but perhaps that “include” line must be placed inside a particular key, like for each dashboard.

According to the documentation it should be in the main dashboard configuration file (which one is that exactly ?), but then I only get errors about an unknown tag,

After this I decided to follow one of the examples and not use yaml, but the UI.

Put the example code at the top of my dashboard file and it works, just like the decluttering card.

Now to find out how to use the yaml example.

Got it working after some tinkering.
At the top of the dashboard file put:

streamline_templates: ‘!include_dir_named …/streamline_templates/’

Don’t forget the two ’ '. (Although for me it works also if I leave the whole line out).
Under

www\community\streamline-card\

I created a file

streamline_templates.yaml

Then put the text for the template left-aligned in the file.
This works for me. I can use the template in my dashboard, but only in yaml mode, not in the UI.
I used this as an example:

light_template:
  default:
    - icon: mdi:lightbulb
      name: vul hier de naam lightbulb in
      type: button
      entity: null
  card:
    type: custom:bubble-card
    card_type: button
    button_type: "[[type]]"
    entity: "[[entity]]"
    name: "[[name]]"
    icon: "[[icon]]"
    tap_action:
      action: toggle
    hold_action:
      action: more-info

and this is my example dashboard:

streamline_templates: '!include_dir_named ../streamline_templates/'
views:
  - title: Home
    type: sections
    max_columns: 1
    sections:
      - type: grid
        cards:
          - type: custom:streamline-card
            template: light_template
            variables:
              - entity: light.dimmer_plafondlampen_light_2
              - type: slider
            grid_options:
              columns: full