I know the driver you mentioned. Did you hit configure or initialize after switching to the community driver?
I did find the driver, I was mistaken. I think you may mean this one: hubitat-public/ThirdReality at main · bradsjm/hubitat-public · GitHub
Let me try and see if I get the same result. Yep.
In one of the threads about these plugs (perhaps this one: New: Third Reality Power monitoring plug) there is a note that there are two versions, a V1 without power monitoring and a V2 with it.
I expect mine is a V1
endpointId: 01
application: 13
firmwareMT: 1233-D3A6-10013058
manufacturer: Third Reality, Inc
model: 3RSP019BZ
powerCluster: none
softwareBuild: v1.00.88
Note the "powerCluster : none"
Upon rereading mine throws an "unknown attribute error" rather than the "Unkown Electrical Measurement" error yours is throwing!
S