What are 404 errors?

[MVMinfotech18]

What are 404 errors?

[thaichacha]

The HTTP 404, 404 Not Found, and 404 error message is a Hypertext Transfer Protocol standard response code, in computer network communications, to indicate that the client was able to communicate with a given server, but the server could not find what was requested.

[neelseowork]

an HTTP 404 error page appears when a web page can't be found.

[murugaaprml]

Status code 404 errors are "page not found" errors. It is probably the most common HTTP error that people encounter when they are browsing the web.