UniFlow2 v2.1.8 Power.getBatteryLevel() Returning 0
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 I had a working program in V2.1.6 using Power.getBatteryLevel() for both CardPuter and M5StickCPlus 2. 
 After upgrading Firmware to 2.1.8 on the device and UiFlow2, the function only returns 0,Is this a known bug? 
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 @Rango 
 known issue, fixing
