Error
    at Object.defineProperty.get (http://localhost:5000/specs/units/errors.spec.coffee:83:32)
    at Object.<anonymous> (http://localhost:5000/specs/units/errors.spec.coffee:89:27)
    at Example.spectacular.Example.Example.executeHook (http://localhost:5000/assets/js/spectacular.js:2052:14)
    at next (http://localhost:5000/assets/js/spectacular.js:2031:22)
    at Example.spectacular.Example.Example.executeHook (http://localhost:5000/assets/js/spectacular.js:2053:16)
    at next (http://localhost:5000/assets/js/spectacular.js:2031:22)
    at Example.spectacular.Example.Example.executeHook (http://localhost:5000/assets/js/spectacular.js:2053:16)
    at next (http://localhost:5000/assets/js/spectacular.js:2031:22)
    at http://localhost:5000/assets/js/spectacular.js:2044:18
    at f (http://localhost:5000/assets/js/spectacular.js:1553:56)