Lovelace Gauge Card shows "Entity is non-numeric:"

This piece of code worked before using Lovelace yaml file. Now I have upgraded to 0.84.1 and using the UI, it shows: “Entity is non-numeric:” error for sensor which should return download speed in Mb/s.

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Anybody knows how to solve this?

I have the same problem though I haven’t upgraded to 0.84 but still at 0.81… I don’t think the issue is related to the card but to the sensor 'cause the value in dev-state is unknown