How can one troubleshoot and resolve PHP errors related to including external scripts?

To troubleshoot and resolve PHP errors related to including external scripts, you can check the file paths to ensure they are correct, verify the permissions of the files being included, and make sure there are no syntax errors in the external scripts. Additionally, you can use error reporting functions like error_reporting(E_ALL) and ini_set('display_errors', 1) to help identify the issue.

error_reporting(E_ALL);
ini_set('display_errors', 1);

include_once 'external_script.php';