Why do some requests return a 404 error?
Normally browser will neglect the 404 errors for the image, css, and js request and these errors may not be visible for the user in the browser.Because css and js are not visible object in the page and image may be overwritten with alt text. But in QEngine during load test it will be reported as 404 error.To solve this, check the corresponding URL with your application whether the file is missing and do the corresponding changes.
