Warning: require_once(jpgraph/jpgraph.php): Failed to open stream: No such file or directory in D:\HTTP\htdocs\gincludes\jpgraph-4.3.2-pro\src\contourf_examples\contour2_ex1.php on line 3

Fatal error: Uncaught Error: Failed opening required 'jpgraph/jpgraph.php' (include_path='D:\xampp\php\PEAR') in D:\HTTP\htdocs\gincludes\jpgraph-4.3.2-pro\src\contourf_examples\contour2_ex1.php:3 Stack trace: #0 {main} thrown in D:\HTTP\htdocs\gincludes\jpgraph-4.3.2-pro\src\contourf_examples\contour2_ex1.php on line 3