How can I debug a trello power-up?

Dylan Harness

I'm working on the basic trello power-up here with a very basic:

var Promise = TrelloPowerUp.Promise;

var btnCallback = function (t, opts) {
  return t.popup({
    title: 'Change Snooze Time',
    url: './estimate.html',
    args: { myArgs: 'You can access these with t.arg()' },
    height: 278
  });
};

TrelloPowerUp.initialize({
  'card-buttons': function(t, options){
    return [{
      icon: 'https://cdn.glitch.com/1b42d7fe-bda8-4af8-a6c8-eff0cea9e08a%2Frocket-ship.png?1494946700421',
      text: 'Claim Ether',
      callback: btnCallback
    }];
  }
});

When I run it I get the following error:

PluginRunner::NotHandled: attempt to run callback on plugin 5a5af7ae0718dcac32a8946b (Ca-Ching) failed

Which doesn't give me any information about why the error occurred, and is next to impossible to debug.

Is it possible to get better error messages, or is it obvious what I'm doing wrong?

bentley_98ecm2

Hey Dylan,

This error usually occurs when you're using the callback capability but you haven't included it in your manifest's capabilities section. Can you confirm that it is included there along with card-buttons?