title: Error: This command is not available when running the Angular CLI outside a workspace
body: <p>I'm fairly new to Angular. But when I try to start my project with <code>ng serve --open</code>, I get this
  <a href="https://i.stack.imgur.com/FXd1V.png" rel="noreferrer">error</a>.</p>
  <p>My project <a href="https://i.stack.imgur.com/8t9pj.png" rel="noreferrer">structure</a> is like this. What can be the problem?</p>