Fatal error: Uncaught PDOException: PDO::__construct(): MySQL server has gone away in /var/www/html/APPLI/vivacar-fr/www/vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php:431 Stack trace: #0 /var/www/html/APPLI/vivacar-fr/www/vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php(431): PDO->__construct('mysql:host=10.3...', 'APVIVACARBDD', 'afauqgsC1wmgtx', Array) #1 /var/www/html/APPLI/vivacar-fr/www/vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php(268): Symfony\Component\HttpFoundation\Session\Storage\Handler\PdoSessionHandler->connect('mysql:host=10.3...') #2 [internal function]: Symfony\Component\HttpFoundation\Session\Storage\Handler\PdoSessionHandler->open('/var/opt/remi/p...', 'PHPSESSID') #3 /var/www/html/APPLI/vivacar-fr/www/vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php(145): session_start() #4 /va in /var/www/html/APPLI/vivacar-fr/www/app/Resources/views/front/base.html.twig on line 14