Fatal error: Uncaught Error: [] operator not supported for strings in /var/www/sigicov_sign/shared/graficos/pChart/pChart.class:1646 Stack trace: #0 /var/www/sigicov_sign/shared/graficos/Example26.php(39): pChart->drawFilledCubicCurve() #1 {main} thrown in /var/www/sigicov_sign/shared/graficos/pChart/pChart.class on line 1646