TypeError: undefined is not an object (evaluating 'state.state')

[liuk4friends]

Hi there,
Since some weeks I could see this error in my logs

Logger: frontend.js.latest.202010012
Source: components/system_log/__init__.py:193 
First occurred: 1:31:43 (5 occurrences) 
Last logged: 1:31:43

https://myurl.duckdns.org:****/hacsfiles/circle-sensor-card/circle-sensor-card.js:76:1713 TypeError: undefined is not an object (evaluating 'state.state')

However, as far as I can understand, all my cards that use this custom frontend are working without any issue

[faspina]

I get this too. I can't figure it out. It repeats the error for every sensor card I have on my view.

[gidadavid]

same here. Ha version is 2021.1.5

Logger: frontend.js.latest.202012291
Source: components/system_log/__init__.py:193
First occurred: 1:21:37 AM (24 occurrences)
Last logged: 1:11:15 PM

http://hassio:8123/hacsfiles/circle-sensor-card/circle-sensor-card.js:76:79 Uncaught TypeError: Cannot read property 'state' of undefined
http://hassio:8123/hacsfiles/circle-sensor-card/circle-sensor-card.js:76:1713 TypeError: undefined is not an object (evaluating 'state.state')

[haffisi]

same here

[michl270]

same error is occuring on my installation

[armdan]

I can't stop this message

circle-sensor-card/circle-sensor-card.js:95:55 TypeError: undefined is not an object (evaluating 'state.attributes')

[armdan]

I gave up on this card