Fatal error: Uncaught Error: Class 'Psr\Log\AbstractLogger' not found in /home/3kyo4/www/test-spreadsheet-output/vendor/psr/log/Psr/Log/NullLogger.php:13 Stack trace: #0 {main} thrown in /home/3kyo4/www/test-spreadsheet-output/vendor/psr/log/Psr/Log/NullLogger.php on line 13