Warning: require_once(jpgraph_plotmark.inc.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\PSAit8Ramp\jpgraph_line.php on line 12

Fatal error: Uncaught Error: Failed opening required 'jpgraph_plotmark.inc.php' (include_path='.;C:\php\pear') in C:\xampp\htdocs\PSAit8Ramp\jpgraph_line.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\PSAit8Ramp\jpgraph_line.php on line 12