Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/hagi/public_html/virtual/vendor/sebastian/diff/tests/Output/DiffOnlyOutputBuilderTest.php:22 Stack trace: #0 {main} thrown in /home/hagi/public_html/virtual/vendor/sebastian/diff/tests/Output/DiffOnlyOutputBuilderTest.php on line 22