Grafana in Horizontal Stack Card error

@csacre wrote:

Hi,

I have a simple card “Horizontal Stack”.

cards:
- entity: sensor.chauffage_e_watts
type: gauge
- aspect_ratio: 60%
type: iframe
url: >-
http://192.168.2.49:8123/api/hassio_ingress/sz_PdKR-Odj9oUleFF3PGDLv-Pg4DqJC7bp1VF31y7k/d/9MjE1mzRk/daily-power?orgId=1&refresh=1m&from=now/d&to=now&panelId=9&fullscreen&kiosk
type: horizontal-stack

The Grafana works fine if alone but not when sharing the space with another card.
I have the message “Cannot read property ‘prefix’ of undefined”.

I tested putting:

• 2 times the entity => It works
• iframe alone => It works
• 2 times iframe => Does not work

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