Fatal error: Uncaught Error: Class "Svg\Tag\AbstractTag" not found in C:\xampp\htdocs\demo_old\vendor\phenx\php-svg-lib\src\Svg\Document.php:31 Stack trace: #0 {main} thrown in C:\xampp\htdocs\demo_old\vendor\phenx\php-svg-lib\src\Svg\Document.php on line 31