Fatal error: Uncaught Error: Class "PharIo\Manifest\ManifestElement" not found in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\phar-io\manifest\src\xml\ExtElement.php:13 Stack trace: #0 {main} thrown in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\phar-io\manifest\src\xml\ExtElement.php on line 13