Fatal error: Uncaught Error: Interface "Psr\Cache\CacheItemPoolInterface" not found in /home/pataplou/www/patrick/pataplouf/vendor/symfony/cache/Tests/Fixtures/ExternalAdapter.php:23 Stack trace: #0 {main} thrown in /home/pataplou/www/patrick/pataplouf/vendor/symfony/cache/Tests/Fixtures/ExternalAdapter.php on line 23