Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/hagi/public_html/virtual/vendor/phar-io/manifest/tests/values/RequirementCollectionTest.php:23 Stack trace: #0 {main} thrown in /home/hagi/public_html/virtual/vendor/phar-io/manifest/tests/values/RequirementCollectionTest.php on line 23