Warning: require_once(Image/Color.php): Failed to open stream: No such file or directory in /var/www/html/gis/GIS.php on line 19

Fatal error: Uncaught Error: Failed opening required 'Image/Color.php' (include_path='.:/usr/share/pear:/usr/share/php') in /var/www/html/gis/GIS.php:19 Stack trace: #0 {main} thrown in /var/www/html/gis/GIS.php on line 19