404: Page not found resolution for non coder help please

[must_ai]

[jamesor]

Start with the posts to see if they help. You’ll need to look at the error message you are receiving to understand the 404.

Sudden 404 Error in Firebase Studio Project

A 404 error means that you are attempting to load a page that your Next.js app doesn’t have a route for. Next.js is failing to render this route. It could be that Next.js isn’t building for another reason and is unable to render any route. Review the server build logs in code mode to see if you are building successfully. [6njnWapQksDfEXe] If your app is building successfully (I suspect it isn’t) then look at this log for which route is giving the 404 and ask Gemini to fix it.

404 This page could not be found. keep showing in the preview page

For the Firebase Studio app icon, edit .idx/icon.png to the image you want. The 404 issue can be a lot of things, but mainly Next.js is unable to serve the route you’re requesting for one reason or another. The best place to start is with your server logs. Look for the output window (SHIFT+CTRL+U) and select “Previews” in the dropdown. Look through the output to see what might have gone wrong with the page request. Copy and paste the error into Gemini to help troubleshoot it if you don’t unders…

[CineyNet]

Try to correct your port to 9002 for src/* folder and correct projects in dev.nix of idx. If you have created the workspace project by prototype agent you will see prefixed “web” name app and upgrade your node modules to 22 from “20”.

It’s is mostly possible you are trying to open such a project that are unavailable mostly cause due to calling worng place. It is default nextjs behaviour.