Input_slider.select_value: expected float error

Hi, I can’t seem to fix this errors:

ERROR (MainThread) [homeassistant.core] Invalid service data for scene.turn_on: Entity ID  is an invalid entity id for dictionary value @ data['entity_id']. Got ''

ERROR (MainThread) [homeassistant.core] Invalid service data for input_slider.select_value: expected float for dictionary value @ data['value']. Got ''

It does work, but it spams the log so I would like to fix it.
I tried a bunch of stuff, but could not figure it out.

It updates the Brightness slider-value after I change scene… I tried to do it from a scene, but could’nt get it to work.

configuration.yaml:

input_select:
  scene_grottan:
    name: Scene
    icon: mdi:brightness-auto
    initial: "-"
    options:
      - "-"
      - "Off"
      - Nightlight
      - Dimmed
      - Relax
      - Read
      - Bright
      - Concentrate
      - Energize
      - WiLLiE

automations.yaml:

- alias: Scene Grottan
  trigger:
    platform: state
    entity_id: input_select.scene_grottan
  action:
  - service: input_slider.select_value
    data_template:
      entity_id: input_slider.lamp_bright
      value: >
        {% if is_state("input_select.scene_grottan", "Nightlight") %} 1
        {% elif is_state("input_select.scene_grottan", "Dimmed") %} 77
        {% elif is_state("input_select.scene_grottan", "Relax") %} 144
        {% elif is_state("input_select.scene_grottan", "Read") %} 254
        {% elif is_state("input_select.scene_grottan", "Bright") %} 254
        {% elif is_state("input_select.scene_grottan", "Concentrate") %} 254
        {% elif is_state("input_select.scene_grottan", "Energize") %} 254
        {% elif is_state("input_select.scene_grottan", "WiLLiE") %} 127
        {% elif is_state("input_select.scene_grottan", "Off") %} 0
        {% endif %}
  - service: scene.turn_on
    data_template:
      entity_id: >
        {%- if is_state( "input_select.scene_grottan", "Nightlight" ) -%} scene.grottan_nightlight
        {%-elif is_state( "input_select.scene_grottan", "Dimmed" ) -%} scene.grottan_dimmed
        {%-elif is_state( "input_select.scene_grottan", "Relax" ) -%} scene.grottan_relax
        {%-elif is_state( "input_select.scene_grottan", "Read" ) -%} scene.grottan_read
        {%-elif is_state( "input_select.scene_grottan", "Bright" ) -%} scene.grottan_bright
        {%-elif is_state( "input_select.scene_grottan", "Concentrate" ) -%} scene.grottan_concentrate
        {%-elif is_state( "input_select.scene_grottan", "Energize" ) -%} scene.grottan_energize
        {%-elif is_state( "input_select.scene_grottan", "WiLLiE" ) -%} scene.grottan_willie
        {%-elif is_state( "input_select.scene_grottan", "Off" ) -%} scene.grottan_off
        {%- endif %}
  - service: input_select.select_option
    data:
      entity_id: input_select.scene_grottan
      option: "-"

a scene:

name: Grottan Bright
entities:
  light.datorn:
    state: on
    brightness: 254
    rgb_color: [255, 207, 120]
  light.subben:
    state: on
    brightness: 254
    rgb_color: [255, 207, 120]
  light.soffan:
    state: on
    brightness: 254
    rgb_color: [255, 207, 120]
#  input_slider.lamp_bright:
#    value: 254

edit:

If I try it directly from a scene, I get this:

2017-09-02 12:36:34 ERROR (MainThread) [homeassistant.bootstrap] Error loading /config/configuration.yaml: mapping values are not allowed here
  in "/config/scenes/grottan-bright.yaml", line 18, column 16

scenes/grottan-bright.yaml

name: Grottan Bright
entities:
  light.datorn:
    state: on
    brightness: 254
    rgb_color: [255, 207, 120]
  light.subben:
    state: on
    brightness: 254
    rgb_color: [255, 207, 120]
  light.soffan:
    state: on
    brightness: 254
    rgb_color: [255, 207, 120]
service: input_slider.select_value
  data_template:
    entity_id: input_slider.lamp_bright
    value: 254