Fatal error: Uncaught Error: Interface "Psr\Log\LoggerInterface" not found in /users/forscher/www/Baikal/vendor/psr/log/Psr/Log/AbstractLogger.php:12 Stack trace: #0 {main} thrown in /users/forscher/www/Baikal/vendor/psr/log/Psr/Log/AbstractLogger.php on line 12