Description: The error message formatter is an essential tool in the development of web applications using various frameworks, including Flask, a popular Python microframework. Its main function is to structure and present error messages generated during the execution of an application clearly. This not only enhances the developer’s experience by facilitating the identification and resolution of issues but can also be useful for end-users by providing understandable information about what went wrong. An error message formatter may include features such as message customization, the inclusion of specific error codes, and the ability to log errors for later analysis. Additionally, it allows integration with monitoring and alert systems, contributing to maintaining the application’s stability and performance. In summary, the error message formatter is a tool that not only optimizes the development process but also plays a crucial role in usability and error management across various web applications.