Waste collection Error static parameter

Hi,
I’m trying to enter static parameter and read with sensors the next picup date.
I get the informations in the Calender and this informations are correct but in the dashboard for the sensors I get only Unknow.

# ------- Garbage Collection ------- 
  # next collection
  - platform: waste_collection_schedule
    name: "Nächste Abholung"
    value_template: '{{value.types|join(", ")}}{% if value.daysTo == 0 %} Heute{% elif value.daysTo == 1 %} Morgen{% else %} in {{value.daysTo}} tagen{% endif %}'
    types:
      - Restmüll
      - Kunststoff & Metal
      - Altpapier
  # Nächste Restmüll-Abholung
  - platform: waste_collection_schedule
    name: "Restmüll"
    value_template: '{{value.types|join(", ")}}{% if value.daysTo == 0 %} Heute{% elif value.daysTo == 1 %} Morgen{% else %} in {{value.daysTo}} tagen{% endif %}'
    source_index: 1
    types:
      - Restmüll
  # Nächste gelber-Sack Abholung
  - platform: waste_collection_schedule
    name: "Kunststoff & Metal"
    value_template: '{{value.types|join(", ")}}{% if value.daysTo == 0 %} Heute{% elif value.daysTo == 1 %} Morgen{% else %} in {{value.daysTo}} tagen{% endif %}'
    source_index: 2
    types:
      - Kunststoff & Metal
  # Nächste Papiermüll Abholung
  - platform: waste_collection_schedule
    name: "Altpapier"
    value_template: '{{value.types|join(", ")}}{% if value.daysTo == 0 %} Heute{% elif value.daysTo == 1 %} Morgen{% else %} in {{value.daysTo}} tagen{% endif %}'
    source_index: 3
    types:
      - Altpapier

waste_collection_schedule:
  sources:
    - name: static
      calendar_title: Restmüll
      args:
        type: Restmüll
        frequency: WEEKLY
        interval: 4
        start: '2024-01-08'
        until: '2024-12-31'
        weekdays: MO
    - name: static
      calendar_title: Kunststoff & Metal
      args:
        type: Kunststoff & Metal
        frequency: WEEKLY
        interval: 4
        start: '2024-01-02'
        until: '2024-12-31'
        weekdays: MO
    - name: static
      calendar_title: Altpapier
      args:
        type: Altpapier
        frequency: WEEKLY
        interval: 8
        start: '2024-01-15'
        until: '2024-12-31'
        weekdays: MO