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Fatal error: Uncaught Error: Call to a member function getHeadPrintCode() on null in /var/www/html/vendor/symfony/maker-bundle/templates/controller/twig_template.tpl.php:1 Stack trace: #0 {main} thrown in /var/www/html/vendor/symfony/maker-bundle/templates/controller/twig_template.tpl.php on line 1