Fatal error: Uncaught Error: Class 'CFormModel' not found in /var/www/html/dev/yii/tests/framework/validators/ModelMock.php:3 Stack trace: #0 /var/www/html/dev/yii/tests/framework/validators/CBooleanValidatorTest.php(3): require_once() #1 {main} thrown in /var/www/html/dev/yii/tests/framework/validators/ModelMock.php on line 3