Fatal error: Uncaught Error: Class 'Monolog\Handler\StreamHandler' not found in /var/www/html/centralapps/vendor/google/cloud-core/src/Logger/AppEngineFlexHandlerV3.php:30 Stack trace: #0 {main} thrown in /var/www/html/centralapps/vendor/google/cloud-core/src/Logger/AppEngineFlexHandlerV3.php on line 30