Fatal error: Uncaught Error: Class "Theme" not found in C:\xampp\htdocs\rp_backend\vendor\mitoteam\jpgraph\src\lib\themes\RoseTheme.class.php:6 Stack trace: #0 {main} thrown in C:\xampp\htdocs\rp_backend\vendor\mitoteam\jpgraph\src\lib\themes\RoseTheme.class.php on line 6