Fatal error: Uncaught Error: Class "Atk4\Core\Phpunit\TestCase" not found in /home/.sites/site4/wwwroot/web/ui/vendor/atk4/core/tests/Phpunit/TestCaseTest.php:15
Stack trace:
#0 {main}
thrown in /home/.sites/site4/wwwroot/web/ui/vendor/atk4/core/tests/Phpunit/TestCaseTest.php on line 15