Do you have ionCube installed?
The ionCube loader PHP extension is disabled on all hosting servers by default. If your website needs the extension you can activate it from your Site Tools -> Dev -> PHP Manager -> PHP Extensions tab -> pencil icon next to the ioncube entry.
Once the extension is loaded, if you want to check the version of the ionCube loader, create a PHP info script on your account and access it from your browser. For example, create a file called info.php in the public_html folder of your account, using File Manager and place the following content in it:
<?php phpinfo(); ?>
Access the file in a browser (e.g. http://yourdomain.com/info.php) and it will show you the entire configuration of the PHP interpreter as well as the ionCube loader version.