Fatal error: Uncaught TypeError: Unsupported operand types: string * int in /var/www/sigicov_sign/shared/graficos/pChart/pChart.class:1635 Stack trace: #0 /var/www/sigicov_sign/shared/graficos/Example7.php(34): pChart->drawFilledCubicCurve() #1 {main} thrown in /var/www/sigicov_sign/shared/graficos/pChart/pChart.class on line 1635