Fatal error: Uncaught Error: Interface "Psr\Http\Message\StreamInterface" not found in C:\Users\Administrator\Desktop\xamp\htdocs\sdk\guzzlehttp\psr7\src\BufferStream.php:17 Stack trace: #0 {main} thrown in C:\Users\Administrator\Desktop\xamp\htdocs\sdk\guzzlehttp\psr7\src\BufferStream.php on line 17