JavaScript Node.js Basics Introduction to Node.js The Console

console freeze on Node.js Basics course work space paused message. continue working button: no response.

Left for awhile and can't resume a console session.
Reloaded main page. Shows a challange task.
Console pop up is paused and 'continue working' button doesn't take out warning overlay. No button to push on challange page to bring up a new console.

app.js
const name = "Andrew";
const details = { favouriteLanguage: "JavaScript", age: 33, children: 3 } 
const errorMessage = "Something bad has occurred";