Controllers bundle actions that handle business logic for each route within Strapi’s MVC pattern. This documentation demonstrates generating controllers, extending core ones with createCoreController, and delegating heavy logic to services.
With Strapi's error handling feature it's easy to send and receive errors in your application.
The @strapi/utils package provides shared utility functions for error handling, environment variables, data validation, hooks, string manipulation, and more.
In Strapi 5, the 'strapi-utils' core package has been refactored. This page lists the additions, removals, and other updates.