Quando carrego a página no Chrome 85 a validação não funciona e no console aparece:
Access to script at 'file:///home/maison/Desktop/alura-validacao-aula-3/services/app.js' from origin 'null' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, chrome-untrusted, https.