Fix Cannot GET using VSCode Live Server extension

• I was recently working on a vanilla JS project and doing a vanilla JS client router. I was developing it using the VSCode Live Server extension. When in a given route i.e. /order and refreshing the browser page I was getting the Cannot GET /order.
• I am not sure I would do a good job explaining why this happens (this SO answer does it). But I know how to fix it!
• Head to the vscode extension settings and set index.html under the Live Server > Settings: File. It will start working.