Trying to access array offset on value of type null
#0 /var/www/da-info.pro/common/classes/UserFunction.php(119): yii\base\ErrorHandler->handleError() #1 /var/www/da-info.pro/frontend/views/layouts/personal_area.php(46): common\classes\UserFunction::getUserName() #2 /var/www/da-info.pro/vendor/yiisoft/yii2/base/View.php(347): require('/var/www/da-inf...') #3 /var/www/da-info.pro/vendor/yiisoft/yii2/base/View.php(257): yii\base\View->renderPhpFile() #4 /var/www/da-info.pro/vendor/yiisoft/yii2/base/Controller.php(422): yii\base\View->renderFile() #5 /var/www/da-info.pro/vendor/yiisoft/yii2/base/Controller.php(408): yii\base\Controller->renderContent() #6 /var/www/da-info.pro/frontend/modules/poster/controllers/DefaultController.php(455): yii\base\Controller->render() #7 [internal function]: frontend\modules\poster\controllers\DefaultController->actionCreate() #8 /var/www/da-info.pro/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array() #9 /var/www/da-info.pro/vendor/yiisoft/yii2/base/Controller.php(178): yii\base\InlineAction->runWithParams() #10 /var/www/da-info.pro/vendor/yiisoft/yii2/base/Module.php(552): yii\base\Controller->runAction() #11 /var/www/da-info.pro/vendor/yiisoft/yii2/web/Application.php(103): yii\base\Module->runAction() #12 /var/www/da-info.pro/vendor/yiisoft/yii2/base/Application.php(384): yii\web\Application->handleRequest() #13 /var/www/da-info.pro/frontend/web/index.php(20): yii\base\Application->run() #14 {main}An internal server error occurred.