Fatal error: Uncaught Error: Interface "Psy\EnvInterface" not found in C:\xampp\htdocs\r10csm\vendor\psy\psysh\test\TestableEnv.php:16 Stack trace: #0 {main} thrown in C:\xampp\htdocs\r10csm\vendor\psy\psysh\test\TestableEnv.php on line 16