Fatal error: Uncaught Error: Class "PhpOffice\PhpWord\Collection\AbstractCollection" not found in E:\phpProject\TEST\vat_api_de_client\vendor\phpoffice\phpword\src\PhpWord\Collection\Titles.php:28 Stack trace: #0 {main} thrown in E:\phpProject\TEST\vat_api_de_client\vendor\phpoffice\phpword\src\PhpWord\Collection\Titles.php on line 28