Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /usr/home/zielony/domains/api.zielony.biz.pl/public_html/app-dev/vendor/sebastian/diff/tests/DiffTest.php:20
Stack trace:
#0 {main}
  thrown in /usr/home/zielony/domains/api.zielony.biz.pl/public_html/app-dev/vendor/sebastian/diff/tests/DiffTest.php on line 20