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/shop/controllers/ServiceController.php(78): yii\base\Controller->render()
#7 [internal function]: frontend\modules\shop\controllers\ServiceController->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.