Description: An error handler in web applications is a function designed to intercept and manage errors that may arise during the processing of requests. Its primary purpose is to provide an appropriate and user-friendly response in case an error occurs, rather than displaying a generic error message or a blank page. This not only enhances the user experience but also allows developers to log and analyze errors more effectively. Error handlers can be customized for different types of exceptions, enabling developers to define how specific errors should be handled, such as 404 errors (page not found) or 500 errors (internal server error). Additionally, these handlers can include extra logic, such as redirecting users to a custom error page, sending notifications to administrators, or logging error details in a monitoring system. In summary, error handling is a crucial part of web application development, as it contributes to the robustness and usability of the application.
