Can't use use tap action in Bubble-Card Button -> slider

[LuCoMaNiA]

What is wrong with my programming that I cannot save a TAP action? In the editor, it always wants to close the window, and when I save it, nothing happens after clicking, of course:

`type: vertical-stack
cards:

• type: custom:bubble-card
  card_type: button
  name: Küche
  icon: mdi:countertop-outline
  hash: "#Kitchen"
  button_type: slider
  show_header: true
  entity: light.licht_kuche
  show_last_changed: false
  show_state: true
  read_only_slider: false
  relative_slide: false
  tap_to_slide: false
  use_accent_color: false
  allow_light_slider_to_0: true
  show_attribute: true
  attribute: brightness
  button_action:
  tap_action:
  action: toggle
  hold_action:
  action: more-info
  double_tap_action:
  action: more-info
• type: custom:bubble-card
  card_type: separator
  name: Lights (example)
  icon: mdi:lightbulb-outline
  button_type: switch
  entity: light.licht_kuche
• type: horizontal-stack
  cards:
  • type: custom:bubble-card
    card_type: button
    button_type: slider
    entity: light.licht_kuche
    show_state: true
    show_icon: true
    sub_button: []
    allow_light_slider_to_0: true
    button_action:
    tap_action:
    action: toggle
    hold_action:
    action: more-info
    double_tap_action:
    action: more-info
  • type: custom:bubble-card
    card_type: button
    button_type: slider
    entity: light.licht_wohnzimmer
    show_state: true
    show_icon: true
    sub_button: []
    allow_light_slider_to_0: true
    button_action:
    tap_action:
    action: toggle
    hold_action:
    action: more-info
    double_tap_action:
    action: more-info
    `

[LuCoMaNiA]