How do I handle exceptions in CodeIgniter to prevent errors from being displayed?

You can catch exceptions within your controllers or models using `try...catch` blocks. This allows you to gracefully handle errors and prevent them from being displayed to the user. If an exception occurs, you can log the error, display a custom message to the user (without exposing internal details), or redirect them to another page. For example: `try { ... } catch (Exception $e) { $this->log_message('error', 'An error occurred: ' . $e->getMessage()); }`