Site suddenly showing 404, without any deployment / updates

Has there been any recent update to the Netlify server which may affect how NextJs sites are routed?

We made some coding updates, pushed up the changes on 9 March and deployed it to production, the site works fine.

Somehow, when checking today, the site shows a 404.

We noticed there was a deployment triggered by webhook call on 6 April, but even with that, there is no changes to the code made.

Today I have made an update to the code and pushed up the changes and deployed, but still shows 404.

We are currently resolving this 404 issue by publishing the deployment made on the 9 March, but this doesnt make any sense to us as to why our site suddenly shows 404.

Please kindly investigate it for us and provide some guideline.

Our site is https://ameliediamonds.au/

This is our latest deployment Netlify no error, but if published, will show page not found.

This is the deployment we have to end up publishing as a temporary solution Netlify

Your site seems to be loading fine for me. Has this been resolved?

As mentioned, I had to publish an earlier build to get the site up as a temporary solution. Any build after that one puts site at Page Not Found.

Hi ya, anyway to help us look into this issue?