Getting error message running the contributed command failed

Question

I'm getting the following error after developing an extension.

Repository is found here.

Answer 1

Change your registerCommand to use a Fat Arrow, like this:

var psconfeuagenda = vscode.commands.registerCommand('extension.getPSConfEUAgenda', () => loadAgenda(psconfeuuri));

I cloned your repo and tested with this update and it appears to be working just fine :)