Fatal error: Uncaught Error: Call to undefined function imagecreate() in /var/www/html/plugins/CryptograPHP/securimage/securimage.php:1711 Stack trace: #0 /var/www/html/plugins/CryptograPHP/securimage/securimage.php(1188): Securimage->doImage() #1 /var/www/html/plugins/CryptograPHP/securimage/securimage_show.php(101): Securimage->show() #2 {main} thrown in /var/www/html/plugins/CryptograPHP/securimage/securimage.php on line 1711