Fatal error: Uncaught Error: Interface "Psr\Http\Message\StreamInterface" not found in I:\www\php_vendor_tests\vendor\guzzlehttp\psr7\src\FnStream.php:16 Stack trace: #0 {main} thrown in I:\www\php_vendor_tests\vendor\guzzlehttp\psr7\src\FnStream.php on line 16