Fatal error: Uncaught RuntimeException: The exit status code '134' says something went wrong: stderr: "Loading pages (1/6) [> ] 0% [======> ] 10% [======> ] 10% [==========> ] 18% *** buffer overflow detected ***: terminated Aborted (core dumped) " stdout: "" command: /var/www/html/vendor/h4cc/wkhtmltopdf-amd64/bin/wkhtmltopdf-amd64 --lowquality --disable-javascript --viewport-size '1920x1080' 'https://www.formel.it/corso/area-finanziaria-e-personale/l_abc-della-performance/idcorso_13514/pdf_si' 'public/pdf_corsi/corso-l_abc-della-performance-13514-26-11-2020.pdf'. in /var/www/html/vendor/knplabs/knp-snappy/src/Knp/Snappy/AbstractGenerator.php:336 Stack trace: #0 /var/www/html/vendor/knplabs/knp-snappy/src/Knp/Snappy/AbstractGenerator.php(151): Knp\Snappy\AbstractGenerator->checkProcessStatus(134, '', 'Loading pages in /var/www/html/vendor/knplabs/knp-snappy/src/Knp/Snappy/AbstractGenerator.php on line 336