Cannot read properties of null (reading 'shadowRoot')

[Mariusthvdb]

2022-01-05 12:51:05 ERROR (MainThread) [frontend.js.latest.202112290] https://mydomain/local/lovelace/resources/kiosk-mode/kiosk-mode.js?v=1.2.1:13:44 Uncaught TypeError: Cannot read properties of null (reading 'shadowRoot')

keeps showing in the log, not exactly sure when or why any user action causes this. please have a look?

All functionality seems to be working, so not sure if this causes any harm at all, but the error looks nasty in the log.... HA 2022.2.0.dev20220105, but this has been there for a while now, forgot to file an issue

config:

non_admin_settings:
  hide_menubutton: true
  hide_overflow: true
  ignore_entity_settings: true

mobile_settings:
  hide_menubutton: true
  hide_overflow: true
  ignore_entity_settings: true

entity_settings:
#Hides both the header and sidebar.
  - entity:
      binary_sensor.kiosk_mode: 'on'
#      input_select.mode: Kiosk
    kiosk: true
# Hides only the header
  - entity:
      input_boolean.hide_header: 'on'
    hide_header: true
# Hides only the sidebar. Disables swipe to open.
  - entity:
      input_boolean.hide_sidebar: 'on'
    hide_sidebar: true
# Hides only the sidebar menu icon. Does not disable swipe to open.
  - entity:
      input_boolean.hide_menubutton: 'on'
    hide_menubutton: true
# Hides the top right menu
  - entity:
      input_boolean.hide_overflow: 'on'
    hide_overflow: true

[DanDon]

Same issue .... causing huge startup delays

[Mariusthvdb]

since card-mod solved a few issues by loading it via the extra_url method, I figured kiosk mode could benefit from that too, maybe preventing timing issues and reach conditions, leading to the mentioned error, so I restarted using:

frontend:
  extra_module_url:
    - /local/lovelace/resources/lovelace-card-mod/card-mod.js
    - /local/lovelace/resources/kiosk-mode/kiosk-mode.js

in configuration.yaml.

havent seen a kiosk mode error since that. its has not been a whole day yet, but this seems rather promising, as the errors were rather persistent and frequent.

just sharing so people reading this could test and see if results are good.

[Mariusthvdb]

the 'fix' from above in the frontend extra_module_error was a complete user error on my behalf.... dont do it, as Kiosk mode wont work correctly or at all... Hence the absence of errors ;-( back to loading via the resources.

[jenniferlee1818]

Logger: frontend.js.latest.202204050 Source: components/system_log/init.py:190 First occurred: 6:53:27 AM (1 occurrences) Last logged: 6:53:27 AM

https://mydomain/hacsfiles/kiosk-mode/kiosk-mode.js?hacstag=303101606172:13:44 Uncaught TypeError: Cannot read properties of null (reading 'shadowRoot')

Home Assistant Container version 2022.4.1 Kiosk Mode version 1.7.2

HACS Integrations: WebRTC Camera Garbage Collection Breaking Changes UI Template sensor configuration Multiscrape Alexa Media Player Weatherbit Weather Forecast for Home Assistant fontawesome browser_mod Wyze NFL Holidays

HACS Frontend: Battery Entity Row Lovelace Text Input Row Fullscreen Card FireTV Remote Card Battery State Card / Entity Row Kiosk Mode auto-entities layout-card Blue Night Theme Bar Card RGB Light Card card-mod state-switch button-card Light Entity Row Roku Card mini-graph-card Entity Attributes Card NFL Card

Home Assistant Integrations: Alexa Media Player Android TV Brother Printer Browser Mod DLNA Digital Media Renderer ESPHome FontAwesome Garbage Collection Generic Camera Glances HACS Holidays Local IP Address MJPEG IP Camera Mobile App motionEye MQTT NETGEAR OpenWeatherMap Sun UI Template sensor configuration UPnP/IGD Version Weatherbit WebRTC Camera WLED Wyze Home Assistant Integration

kiosk_mode:
  hide_header: true
views:
  - title: Home
    type: panel
    badges: []
    cards:
      - type: grid
        columns: 2
        square: false
        cards:
          - type: grid
            cards:
              - type: conditional
                conditions:
                  - entity: sun.sun
                    state: above_horizon
                card:
                  type: custom:webrtc-camera
                  url: xxx
              - type: conditional
                conditions:
                  - entity: sun.sun
                    state: below_horizon
                card:
                  type: custom:webrtc-camera
                  url: xxx
            columns: 1
            square: false
          - type: custom:webrtc-camera
            url: xxx
          - type: custom:webrtc-camera
            url: xxx
          - show_state: false
            show_name: false
            camera_view: auto
            type: picture-entity
            entity: camera.clocktower_cam
            camera_image: camera.clocktower_cam
          - show_name: true
            name: Show Page Header
            icon: mdi:page-layout-header
            show_icon: true
            type: button
            tap_action:
              action: url
              url_path: >-
                https://mydomain/lovelace-cams/0?disable_km

[Mariusthvdb]

yeah, it still happens, and we have to fear Maykar has abandoned his repos. it's been such a long time since he responds to anything here, (or elsewhere in HA for that matter)