Why did my online store suddenly freeze?

Hi I was customising my store zackred.com , then Boom it just got freeze and I came up with a page saying;

The page isn’t working

If the problem continues, contact the site owner

Pls Help Me..

@ZACKRED

I’m not able to replicate the error on my end as the store loads perfectly fine. Likely a local-ended issue. You could try clearing your cache/cookies and restart your browser. If the issue persists, then you could try restarting your internet connection while testing another internet connection (like mobile data) to see if you can replicate the issue.