Fatal error: Uncaught Error: Class "Cake\TestSuite\TestCase" not found in C:\xampp\htdocs\QuickApps\plugins\Installer\tests\TestCase\Utility\DatabaseInstallerTest.php:22 Stack trace: #0 {main} thrown in C:\xampp\htdocs\QuickApps\plugins\Installer\tests\TestCase\Utility\DatabaseInstallerTest.php on line 22