Fatal error: Uncaught Error: Interface "Mollie\Api\Idempotency\IdempotencyKeyGeneratorContract" not found in C:\xampp\htdocs\addfirst\vendor\mollie\mollie-api-php\src\Idempotency\FakeIdempotencyKeyGenerator.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\addfirst\vendor\mollie\mollie-api-php\src\Idempotency\FakeIdempotencyKeyGenerator.php on line 7