Fatal error: Uncaught Error: Undefined constant "IMG_PNG" in C:\Program Files\xampp\htdocs\stats\includes\jpg5\jpgraph_errhandler.inc.php:194 Stack trace: #0 C:\Program Files\xampp\htdocs\stats\includes\jpg5\jpgraph_errhandler.inc.php(112): JpGraphErrObjectImg->Raise('This PHP instal...') #1 C:\Program Files\xampp\htdocs\stats\includes\jpg5\jpgraph.php(235): JpGraphError::RaiseL(25001) #2 C:\Program Files\xampp\htdocs\stats\includes\imgcommon.php(71): include('C:\\Program File...') #3 C:\Program Files\xampp\htdocs\stats\imgsess.php(28): include('C:\\Program File...') #4 {main} thrown in C:\Program Files\xampp\htdocs\stats\includes\jpg5\jpgraph_errhandler.inc.php on line 194