Pretty sure it’s a code error in webCore, (posted in meta, seems the right place).
9:34:47 AM: error ║ Error while executing physical command SolarEdge V2.poll([]): groovy.lang.MissingMethodException: No signature of method: physicalgraph.device.HubMultiAction.add() is applicable for argument types: (java.util.LinkedHashMap) values: [[name:power_details, value:(+426W) — Today’s Peak: 2,688W (32.8%), …]]
And here is the piston, which simply calls a poll on the device successfully except for the error:
And for the record, I do think the poll is working, and fixing this error may just be a fine tuning/fixes other issues for webCore. Every bug is an opportunity!