Page Speed Insights not showing any data

Question

Error Message

Attached picture showing what it displays when I put in the weblink of my website.

Would be great if someone could shed some light as to why it's not loading. It was working when I first started using page speed insights few months ago but recently started showing me these errors.

Answer 1

Are you sure that field data exists for the domain key. In case field data doesn't really exists, try lighthouse in built in chrome or use pagespeed-insights.com to do the lab data analysis and wait for field data to be accumulated.