Values and the graph ring are displaying this:
Going into Devices for the entities shows data, so something broke in the display with the card.
This error might be a clue: Logger: frontend.js.modern.202608267
Source: components/system_log/init.py:330
First occurred: 1:31:58 PM (28 occurrences)
Last logged: 6:20:46 PM
Uncaught error from Firefox 155.0 on Windows 10.0 TypeError: can’t access dead object @:0:1