Fatal error: Uncaught Error: Class 'Google\Cloud\Core\Testing\Snippet\SnippetTestCase' not found in /home/app/htdocs/lidia/vendor/google/cloud/tests/snippets/Trace/AttributesTest.php:27 Stack trace: #0 {main} thrown in /home/app/htdocs/lidia/vendor/google/cloud/tests/snippets/Trace/AttributesTest.php on line 27