Fatal error: Uncaught Error: Class "Go\Instrument\Transformer\BaseSourceTransformer" not found in /var/www/html/vendor/goaop/framework/src/Instrument/Transformer/SelfValueTransformer.php:21 Stack trace: #0 {main} thrown in /var/www/html/vendor/goaop/framework/src/Instrument/Transformer/SelfValueTransformer.php on line 21