Fatal error: Uncaught Error: Cannot instantiate abstract class Mike42\Escpos\EscposImage in /var/www/html/goe/vendor/mike42/escpos-php/example/specific/54-gfx-sidebyside.php:41 Stack trace: #0 {main} thrown in /var/www/html/goe/vendor/mike42/escpos-php/example/specific/54-gfx-sidebyside.php on line 41