Fatal error: Uncaught Error: Class 'yii\helpers\ArrayHelper' not found in /home/wittyly/public_html/live/hr-witty/vendor/kartik-v/yii2-export/src/views/_columns.php:29 Stack trace: #0 {main} thrown in /home/wittyly/public_html/live/hr-witty/vendor/kartik-v/yii2-export/src/views/_columns.php on line 29