Fatal error: Uncaught Error: Class "GuzzleHttp\Psr7\Stream" not found in /users/danielstruebig/www/firma/vendor/guzzlehttp/psr7/tests/ReadSeekOnlyStream.php:10 Stack trace: #0 {main} thrown in /users/danielstruebig/www/firma/vendor/guzzlehttp/psr7/tests/ReadSeekOnlyStream.php on line 10