Fatal error: Uncaught Error: Interface 'Psr\Http\Message\StreamInterface' not found in /home/devmecseminars/public_html/mec/vendor/symfony/psr-http-message-bridge/Tests/Fixtures/Stream.php:19 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/symfony/psr-http-message-bridge/Tests/Fixtures/Stream.php on line 19