What is the fastest solution for Page not Found error message?

It can’t on your end. It’s an issue with the site’s server or an invalid URL.

…What is one of the causes for Page Not Found, that can be solved in 5 seconds or so by anyone?

It’s caused by some one typing in an invalid URL. Likethis.com

…when clicking on an image for eg. in an actual website .

@flo

That’s what I’m telling you – it can’t be solved by anyone. And damn sure not in 5 seconds or less. If you’re getting a 404 error then it’s ether an issue with the site’s servers. That’s not something an end-user has any control over. The other possibility is that you’re typing in a URL that is not valid, effectively commanding the web browser to look for a page that doesn’t exist. Make sure you’re typing the URL correctly.

Only thing you can try is to push f5 and/or reload the page.

@flo

Do you have a specific url that’s sending you to an error page?

From the cursory testing that I’ve done, if you click on a url for a nonexistent site, you probably won’t get a 404 error message, but you will if you include a page that doesn’t exist in an existing site; e.g., https://www.imdb.com/trumpsux

Or maybe go to Wayback Machine to see the page before it was deleted.

Thanks. @RedDeerGuy1 and @Brian1946 and @Mimishu1995 I’m referring to clicking on a well known site maybe even internationally It’s if you click on an image on the homepage (so homepage is ok I didn’t mention that) Since it’s the first time it happened I’ll make sure if it’s been fixed, before I post it etc.,

Ok, it’s been fixed, just like I suspected it would be.