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)