Fatal error: Uncaught Error: Class 'ZipStream\Stream' not found in D:\xampp\htdocs\psp\backend\vendor\maennchen\zipstream-php\src\DeflateStream.php:7 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\maennchen\zipstream-php\src\DeflateStream.php on line 7