Description: Http404 is an exception that is raised when a requested resource is not found. This exception is crucial for handling situations where a user attempts to access a page or resource that does not exist on the server. When a 404 error occurs, the web server returns an HTTP response indicating that the resource was not found, allowing developers to customize the user experience in case of errors. This exception not only helps maintain the integrity of the website but also enhances the user experience by providing clear and specific messages about the lack of content. Additionally, Http404 can be used in conjunction with other web development tools, such as controllers and middleware, to effectively manage routes and server responses. In summary, Http404 is an essential part of error handling in web applications, ensuring that users receive helpful information instead of generic error messages.