Fatal error: Uncaught Error: Class 'Psr\Log\AbstractLogger' not found in /mnt/volume_lon1_01/backend/adminseppi/vendor/symfony/error-handler/BufferingLogger.php:21 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/adminseppi/vendor/symfony/error-handler/BufferingLogger.php on line 21