Tasmota device with arduino uno as slave sending power related data

[KhurramFHassan]

I have a tasmota device with slave support (the slave is an arduino uno that sends power related data to the device). I have been able to add the device to TasmoAdmin, but it gives a long error in a popup window when I hover over the device name. I am unable to copy the long error message from the popup windows. Also, it does not show the power data in the column in the device list page

[KhurramFHassan]

I would like to know how I can show the power data in the devices page (similar to Sonoff Pow R2). Is there a command send by tasmoadmin and what should be its response?
Thanks