Notice: Use of undefined constant GChart_DIR - assumed 'GChart_DIR' in C:\Work\rnia\lib\vendor\GChart\gchart-0.1\classes\GChart_Marker.php on line 5

Warning: require_once(GChart_DIR/GChart.php): failed to open stream: No such file or directory in C:\Work\rnia\lib\vendor\GChart\gchart-0.1\classes\GChart_Marker.php on line 5

Fatal error: require_once(): Failed opening required 'GChart_DIR/GChart.php' (include_path='C:\xampp_564\php\PEAR') in C:\Work\rnia\lib\vendor\GChart\gchart-0.1\classes\GChart_Marker.php on line 5