Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/hagi/public_html/virtual/vendor/psy/psysh/test/Formatter/SignatureFormatterTest.php:18 Stack trace: #0 {main} thrown in /home/hagi/public_html/virtual/vendor/psy/psysh/test/Formatter/SignatureFormatterTest.php on line 18