Fatal error: Uncaught Error: Class "ParagonIE\Halite\Key" not found in C:\Apache24\htdocs\cms_upgrade\vendor\paragonie\halite\src\Asymmetric\PublicKey.php:17 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\paragonie\halite\src\Asymmetric\PublicKey.php on line 17