Button not working in preview


Hi, I´ve put a button in a sprite extension, whitout code onRun, but when I click it throw an error in device.id. (Same happens if I put code in onRun function)

Uncaught TypeError: Cannot read properties of undefined (reading ‘id’)
at Object.onRun (interfaz_robotica_1056308.js:1693:89)
at e.buttonCallback [as callback_] (ext-manager.429bdf4c.js:1:44947)
at Blockly.FlyoutButton.onMouseUp_ (315.0d9c5fdb.js:1:867704)
at SVGGElement.s (315.0d9c5fdb.js:1:988253)



The extension builder thinks there is an error in your coding (the parts underlined in red and the red “X”). Does it say what it expected? @astoctas


This is the error, it´s not my code, it is builder´s


What it means by “Cannot read properties” is it thinks you have made an error. Maybe it is wrong, maybe it isn’t. What I gather from the error is it thinks that “id” is part of a function (in JavaScript, perhaps?) and that the function has not been defined anywhere.


Try it yourself…in a simple sprite extension, put a button and nothing else. When you click it in preview mode, the error appears. Even if you put any code in onRun, the same error appears.

It´s the same as here: TypeError: Cannot read properties of undefined (reading 'id')


Hmm… I’ll see what I can find out.


@Best_codes Can you find anything out? Regards!


Sorry, I’m very busy. I’ve been trying. Mention @CommandeR @MurrayElliot @Crackel.