Fatal error: Uncaught Error: Class "Atk4\Data\Model" not found in /home/.sites/site4/wwwroot/web/4.0/ui/vendor/atk4/data/tests/SubTypesTest.php:11 Stack trace: #0 {main} thrown in /home/.sites/site4/wwwroot/web/4.0/ui/vendor/atk4/data/tests/SubTypesTest.php on line 11