That’s the error I got with debug:
Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 84 bytes) in /web/htdocs/www.coachmag.it/home/wp-content/plugins/woocommerce-pdf-invoices-packing-slips/vendor/dompdf/dompdf/src/Css/Style.php on line 843
