Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app/htdocs/ninja/vendor/google/cloud/tests/unit/Trace/SpanTest.php:26 Stack trace: #0 {main} thrown in /home/app/htdocs/ninja/vendor/google/cloud/tests/unit/Trace/SpanTest.php on line 26