title: yarn start localhost:3000 not loading
body: <p>I am getting accustomed to <a href="https://roots.io/sage-9/" rel="nofollow noreferrer">Sage 9</a>. I have everything set up but when I run <code>yarn start</code>, localhost:3000 opens in the browser and nothing loads. What should I be doing? Any tips would be great if you have experience working with Sage 9.</p>