whoops
Drupal integration with the Whoops library - PHP errors for cool kids.
Warning: Do not use this module on a production environment or any other environment that needs to remain secure. This module exposes detailed information about any fatal errors that may occur in PHP. Only use for development purposes.
What is Whoops? Out-of-the-box, it provides a pretty error screen that helps you debug your web projects and makes PHP errors generally more useful, with not only a stack trace, but also a view of the code where the error occurred. At its core, it is a simple yet powerful stacked error handling system. For more information, see the Whoops project's official page
Note: The module registers an error handler which provides debug information. Therefore, it is not suitable for a production environment.