How to test a new Express.js and Angular Implementation

I have just added Sentry to my front and back end of a project, which are Angular (2) and express.js based respectively.

I have followed the start up guides and haven’t had any issues. But now running the project, my Sentry dashboard is still blank. I have tried to create some artificial errors, but nothing shows up.

How can I test to see if Sentry is working for both front and back end? Is there a specific issue I can throw which should show up in Sentry?