In CakePHP, debugging is the process of identifying and fixing errors in your application’s code. CakePHP provides several tools and techniques that can help you debug your application, including:

• Debug Kit: The Debug Kit is a CakePHP plugin that provides a user interface for debugging your application. It includes features such as a request profiler, a timeline of events, and a database log. You can install the Debug Kit by following the instructions at https://book.cakephp.org/4/en/development/debug-kit.html.

• Debug Level: You can set the debug level of your application in the config/app.php file. The debug level determines the level of detail displayed in error messages and log files. You can set the debug level to one of the following values:

• 0: No debugging messages are displayed.

• 1: Only error messages are displayed.

• 2: Error and warning messages are displayed.

• 3: All messages (including notice and debugging messages) are displayed.

• Debugging Functions: CakePHP provides several functions that can help you debug your code. These include debug(), pr(), and Log::debug(). You can use these functions to output data to the screen or log files, which can help you identify problems in your code.

By using these tools and techniques, you should be able to effectively debug your CakePHP application and identify and fix errors.