(SystemJS) Invalid System.register call. Anonymous System.register calls can only be made by modules loaded by SystemJS.import and not via script tags.
Aparentemente o erro ocorre na linha : System.import('js/app/boot').catch(function (err) { console.error(err) }); do arquivo index.html
Mais informações apresentadas do erro: TypeError: Invalid System.register call. Anonymous System.register calls can only be made by modules loaded by SystemJS.import and not via script tags. at execute (http://localhost:3000/js/app/polyfill/fetch.js:9:14) Error loading http://localhost:3000/js/app/boot.js
código no github: https://github.com/ivanslongarai/javaScriptAlura01