I don’t really get what is hard to understand here.
When I use the service to switch the dishwasher on or off, I get the reply that the state couldn’t be set. No matter where I use it, in the developer tools, a script, whatever. But yeah, I can give an example:
And as I said above, the switch actually WORKS (device is switched on) but it still sends the error that the state couldn’t be set. And that kills the script.