Fatal error: Uncaught Error: Class "Psr\Log\AbstractLogger" not found in /var/www/html/ohnishi-test.site/PayPal-PHP-SDK-master/lib/PayPal/Log/PayPalLogger.php:9
Stack trace:
#0 {main}
thrown in /var/www/html/ohnishi-test.site/PayPal-PHP-SDK-master/lib/PayPal/Log/PayPalLogger.php on line 9