Fatal error: Uncaught Error: Class 'Svg\Tag\AbstractTag' not found in C:\Apache24\htdocs\vendor\phenx\php-svg-lib\src\Svg\Tag\RadialGradient.php:11 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor\phenx\php-svg-lib\src\Svg\Tag\RadialGradient.php on line 11