Fatal error: Uncaught Error: Class "Psr\Log\AbstractLogger" not found in /var/www/html/ohnishi-test.site/_paypal-develop-php/vendor/psr/log/Psr/Log/NullLogger.php:13 Stack trace: #0 {main} thrown in /var/www/html/ohnishi-test.site/_paypal-develop-php/vendor/psr/log/Psr/Log/NullLogger.php on line 13