Cannot read property 'states' of undefined.

Checklist

• [x ] I updated the card to the latest version available
• [x ] I cleared the cache of my browser

Describe the bug Sometimes when I enter a page I get the following error button-card.js:1638 Uncaught (in promise) TypeError: Cannot read property 'states' of undefined It happens on this part: this._stateObj = this._config.entity ? this._hass.states[this._config.entity] : void 0;try { When I then keep that page open for some minutes some of the button cards suddenly starts working and show up (otherwise they are just empty/not visible).

Version of the card Version: 3.3.5

To Reproduce It happens in different ways I use button card but an example is:

- type: custom:auto-entities
            filter:
              exclude:
                - entity_id: '*battery_state*'
              include:
                - entity_id: '*battery*'
                  domain: sensor
                  options:
                    type: custom:button-card
                    template: house_data_item
                    entity: this.entity_id
                    icon: >
                      [[[ 
                        if (states[`this.entity_id`].state == 'unknown'){
                          return 'mdi:battery-alert';
                        } else {
                          return 'mdi:battery';
                        }
                      ]]]
                - type: custom:button-card
                  color_type: blank-card
                  aspect_ratio: 1/1

Desktop (please complete the following information): Latest version chrome

[thomasloven]

You can never trust the order setConfig, set hass or attachment to DOM will happen in. Especially not when the GUI editor is involved. Also, setConfig may be called hundreds of times during the lifetime of the card - just a heads up.

[RomRider]

Will fix that soon. They’ve changed something in core which make the hass object undefined while the card is created and it fucks everything up…