Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /data/htmlwww/workspace/web-tubanzhang/vendor/guzzlehttp/psr7/tests/BaseTest.php:6
Stack trace:
#0 {main}
thrown in /data/htmlwww/workspace/web-tubanzhang/vendor/guzzlehttp/psr7/tests/BaseTest.php on line 6