Trying to get property 'link' of non-object
#0 /var/www/da-info.pro/frontend/widgets/views/recommend.php(104): yii\base\ErrorHandler->handleError()
#1 /var/www/da-info.pro/vendor/yiisoft/yii2/base/View.php(347): require('/var/www/da-inf...')
#2 /var/www/da-info.pro/vendor/yiisoft/yii2/base/View.php(257): yii\base\View->renderPhpFile()
#3 /var/www/da-info.pro/vendor/yiisoft/yii2/base/View.php(156): yii\base\View->renderFile()
#4 /var/www/da-info.pro/vendor/yiisoft/yii2/base/Widget.php(242): yii\base\View->render()
#5 /var/www/da-info.pro/frontend/widgets/ShowRightRecommend.php(44): yii\base\Widget->render()
#6 /var/www/da-info.pro/vendor/yiisoft/yii2/base/Widget.php(146): frontend\widgets\ShowRightRecommend->run()
#7 /var/www/da-info.pro/frontend/modules/board/views/default/index.php(127): yii\base\Widget::widget()
#8 /var/www/da-info.pro/vendor/yiisoft/yii2/base/View.php(347): require('/var/www/da-inf...')
#9 /var/www/da-info.pro/vendor/yiisoft/yii2/base/View.php(257): yii\base\View->renderPhpFile()
#10 /var/www/da-info.pro/vendor/yiisoft/yii2/base/View.php(156): yii\base\View->renderFile()
#11 /var/www/da-info.pro/vendor/yiisoft/yii2/base/Controller.php(407): yii\base\View->render()
#12 /var/www/da-info.pro/frontend/modules/board/controllers/DefaultController.php(109): yii\base\Controller->render()
#13 [internal function]: frontend\modules\board\controllers\DefaultController->actionIndex()
#14 /var/www/da-info.pro/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array()
#15 /var/www/da-info.pro/vendor/yiisoft/yii2/base/Controller.php(178): yii\base\InlineAction->runWithParams()
#16 /var/www/da-info.pro/vendor/yiisoft/yii2/base/Module.php(552): yii\base\Controller->runAction()
#17 /var/www/da-info.pro/vendor/yiisoft/yii2/web/Application.php(103): yii\base\Module->runAction()
#18 /var/www/da-info.pro/vendor/yiisoft/yii2/base/Application.php(384): yii\web\Application->handleRequest()
#19 /var/www/da-info.pro/frontend/web/index.php(20): yii\base\Application->run()
#20 {main}
An internal server error occurred.