Save Post: Fatal Error

On creating a new QR code the following Fatal error orrurs

Fatal error: Uncaught Error: Call to undefined function ImageCreate() in D:\xampp\htdocs\newtest\wp-content\plugins\qr-redirector\phpqrcode\qrimage.php:74 Stack trace: #0 D:\xampp\htdocs\newtest\wp-content\plugins\qr-redirector\phpqrcode\qrimage.php(32): QRimage::image(Array, '5', 0) #1 D:\xampp\htdocs\newtest\wp-content\plugins\qr-redirector\phpqrcode\qrencode.php(494): QRimage::png(Array, 'D:\\xampp\\htdocs...', '5', 0, false) #2 D:\xampp\htdocs\newtest\wp-content\plugins\qr-redirector\phpqrcode\qrencode.php(286): QRencode->encodePNG('http://localhos...', 'D:\\xampp\\htdocs...', false) #3 D:\xampp\htdocs\newtest\wp-content\plugins\qr-redirector\qr-redirector.php(331): QRcode::png('http://localhos...', 'D:\\xampp\\htdocs...', 'L', '5', 0) #4 D:\xampp\htdocs\newtest\wp-includes\class-wp-hook.php(309): qr_dynamic_save_postdata(8) #5 D:\xampp\htdocs\newtest\wp-includes\class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array) #6 D:\xampp\htdocs\newtest\wp-includes\plugin.php(476): WP_Hook->do_action(Array) #7 D:\xampp\htdocs\newtest\wp-includes\post.php(4673): do_action('save_post', 8, Object(WP_Post), true) #8 D:\xampp\htdocs\newtest\wp-includes\post.php(4775): wp_insert_post(Array, false, true) #9 D:\xampp\htdocs\newtest\wp-admin\includes\post.php(426): wp_update_post(Array) #10 D:\xampp\htdocs\newtest\wp-admin\post.php(227): edit_post() #11 {main} thrown in D:\xampp\htdocs\newtest\wp-content\plugins\qr-redirector\phpqrcode\qrimage.php on line 74
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