[     269ms] ReferenceError: Missing element: expected "[data-md-component=header]" to be present
    at j (http://localhost:4000/assets/javascripts/bundle.79ae519e.min.js:14:35799)
    at Ce (http://localhost:4000/assets/javascripts/bundle.79ae519e.min.js:14:42721)
    at http://localhost:4000/assets/javascripts/bundle.79ae519e.min.js:14:94068
    at http://localhost:4000/assets/javascripts/bundle.79ae519e.min.js:14:95391
[     418ms] [ERROR] Failed to load resource: the server responded with a status of 404 (Not Found) @ http://localhost:4000/favicon.ico:0