Fatal error: Uncaught Error: Class 'Yii' not found in /data/htmlwww/workspace/web-tubanzhang/tests/codeception/common/templates/fixtures/user.php:7 Stack trace: #0 {main} thrown in /data/htmlwww/workspace/web-tubanzhang/tests/codeception/common/templates/fixtures/user.php on line 7