How do I handle other error types besides 404 (e.g., 500 Internal Server Error) using custom error pages?

To handle other error types like 500 Internal Server Error, you need to create separate error view files (e.g., `500.php`) in the `application/views/errors` directory. Then, you'll need to define custom error handlers in your `ErrorHandler.php` class to handle each specific error code. Within these handlers, you'll set the appropriate HTTP status code using `$this->set_header()` and render the corresponding error view file. CodeIgniter provides several error codes (400, 403, 500, etc.) that you can utilize.