Fatal error: Uncaught Symfony\Component\Lock\Exception\InvalidArgumentException: The FlockStore directory "/var/www/app/var/cache/prod" is not writable. in /var/www/app/vendor/symfony/lock/Store/FlockStore.php:47 Stack trace: #0 /var/www/app/vendor/toflar/psr6-symfony-http-cache-store/src/Psr6Store.php(546): Symfony\Component\Lock\Store\FlockStore->__construct('/var/www/app/va...') #1 /var/www/app/vendor/toflar/psr6-symfony-http-cache-store/src/Psr6Store.php(95): Toflar\Psr6HttpCacheStore\Psr6Store->getDefaultLockStore('/var/www/app/va...') #2 /var/www/app/vendor/symfony/options-resolver/OptionsResolver.php(1007): Toflar\Psr6HttpCacheStore\Psr6Store->Toflar\Psr6HttpCacheStore\{closure}(Object(Symfony\Component\OptionsResolver\OptionsResolver), NULL) #3 /var/www/app/vendor/symfony/options-resolver/OptionsResolver.php(905): Symfony\Component\OptionsResolver\OptionsResolver->offsetGet('lock_factory') #4 /var/www/app/vendor/toflar/psr6-symfony-http-cache-store/src/Psr6Store.php(100): Symfony\Component\OptionsResolver\OptionsResolver->resolve(Array) #5 /var/www/app/public/index.php(18): Toflar\Psr6HttpCacheStore\Psr6Store->__construct(Array) #6 /var/www/app/vendor/autoload_runtime.php(24): {closure}(Array) #7 /var/www/app/public/index.php(7): require_once('/var/www/app/ve...') #8 {main} thrown in /var/www/app/vendor/symfony/lock/Store/FlockStore.php on line 47