Fatal error: Uncaught Error: Call to undefined function imagecreatefromjpeg() in /var/www/html/resizer/index.php:37 Stack trace: #0 /var/www/html/resizer/index.php(15): resize->openImage('https://images-...') #1 /var/www/html/resizer/index.php(278): resize->__construct('https://images-...') #2 {main} thrown in /var/www/html/resizer/index.php on line 37