Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app/htdocs/lidia/vendor/google/cloud/tests/unit/Core/Logger/AppEngineFlexHandlerTest.php:28 Stack trace: #0 {main} thrown in /home/app/htdocs/lidia/vendor/google/cloud/tests/unit/Core/Logger/AppEngineFlexHandlerTest.php on line 28