Fatal error: Uncaught ReflectionException: Class "Psr\SimpleCache\CacheInterface" does not exist in E:\www\frey\qgmvc\v1.0\composer\vendor\symfony\cache\Psr16Cache.php:22 Stack trace: #0 E:\www\frey\qgmvc\v1.0\composer\vendor\symfony\cache\Psr16Cache.php(22): ReflectionMethod->__construct('Psr\\SimpleCache...', 'get') #1 {main} thrown in E:\www\frey\qgmvc\v1.0\composer\vendor\symfony\cache\Psr16Cache.php on line 22