Previously working commands borked?

General Discussion
1 
{
    error = 1;
    message = "Command 'on' is not supported. Supported commands: [setLevel, refresh, poll, levelUp, levelDown]";
    type = "java.lang.IllegalArgumentException";
}

Anyone else getting error messages like this when trying to turn devices on or off using code like item.on()? This was previously working for me, but just stopped this morning…

2

FTR, this seems to have fixed itself as of this evening. Hopefully just a glitch?