Fatal error: Uncaught Error: Interface 'Psr\Http\Message\StreamInterface' not found in /data/htmlwww/workspace/web-tubanzhang/vendor/guzzlehttp/psr7/tests/StreamDecoratorTraitTest.php:8 Stack trace: #0 {main} thrown in /data/htmlwww/workspace/web-tubanzhang/vendor/guzzlehttp/psr7/tests/StreamDecoratorTraitTest.php on line 8