Fatal error: Uncaught Error: Class "PhpOffice\Math\Element\AbstractGroupElement" not found in E:\phpProject\TEST\vat_api_se_client\vendor\phpoffice\math\src\Math\Element\Semantics.php:7 Stack trace: #0 {main} thrown in E:\phpProject\TEST\vat_api_se_client\vendor\phpoffice\math\src\Math\Element\Semantics.php on line 7