404
4xx Client ErrorNot Found
The server can't find the requested resource. The classic broken link.
404 Not Found means the server reached the right host but has nothing at that path. The request was fine - the resource just isn't there, whether it never existed, moved, or was deleted. It's the most familiar error on the web. Note it's distinct from 410 Gone, which says a resource existed but was intentionally removed for good.
About 4xx Client Error
The request has a problem the client needs to fix, like a bad URL, missing auth, or invalid input.
How to fix 404 Not Found
- Check the URL for typos, wrong casing, or a missing path segment.
- Confirm the resource still exists and wasn't moved or deleted.
- If you moved the page, add a 301 redirect from the old URL.
- For SPAs, make sure the server rewrites unknown paths to index.html.