Fatal error: Uncaught Symfony\Component\Filesystem\Exception\IOException: A temporary file could not be created. in /var/www/cbi/data/www/cbi.kg/vendor/symfony/symfony/src/Symfony/Component/Filesystem/Filesystem.php:638 Stack trace: #0 /var/www/cbi/data/www/cbi.kg/vendor/symfony/symfony/src/Symfony/Component/Filesystem/Filesystem.php(686): Symfony\Component\Filesystem\Filesystem->tempnam('/var/www/cbi/da...', 'appProdProjectC...') #1 /var/www/cbi/data/www/cbi.kg/vendor/symfony/symfony/src/Symfony/Component/Config/ResourceCheckerConfigCache.php(124): Symfony\Component\Filesystem\Filesystem->dumpFile('/var/www/cbi/da...', '<?php\n\nuse Symf...') #2 /var/www/cbi/data/www/cbi.kg/src/CMSBundle/Routing/Router.php(63): Symfony\Component\Config\ResourceCheckerConfigCache->write('<?php\n\nuse Symf...', Array) #3 /var/www/cbi/data/www/cbi.kg/vendor/symfony/symfony/src/Symfony/Component/Routing/Router.php(256): CMSBundle\Routing\Router->getMatcher() #4 /var/www/cbi/data/www/cbi.kg/vendor/symfony/symfony/src/Symfony/Component/HttpKer in /var/www/cbi/data/www/cbi.kg/src/CMSBundle/Resources/views/Widgets/callback.html.twig on line 66