Fatal error: Uncaught Error: Class 'yii\helpers\ArrayHelper' not found in /data/htmlwww/workspace/web-tubanzhang/tests/codeception/config/frontend/acceptance.php:7 Stack trace: #0 {main} thrown in /data/htmlwww/workspace/web-tubanzhang/tests/codeception/config/frontend/acceptance.php on line 7