PHP Notice 'yii\base\ErrorException' with message 'Undefined variable: headLinesArticles' 

in /work/php/bproj/frontend/views/article/index.php:43

Stack trace:
#0 /work/php/bproj/frontend/views/article/index.php(43): yii\web\ErrorHandler->handleError()
#1 /work/php/bproj/vendor/yiisoft/yii2/base/View.php(348): yii\web\View->unknown()
#2 /work/php/bproj/vendor/yiisoft/yii2/base/View.php(257): yii\web\View->renderPhpFile()
#3 /work/php/bproj/vendor/yiisoft/yii2/base/View.php(156): yii\web\View->renderFile()
#4 /work/php/bproj/vendor/yiisoft/yii2/base/Controller.php(386): yii\web\View->render()
#5 /work/php/bproj/frontend/controllers/SearchController.php(47): frontend\controllers\SearchController->render()
#6 /work/php/bproj/vendor/yiisoft/yii2/base/InlineAction.php(57): frontend\controllers\SearchController->actionIndex()
#7 /work/php/bproj/vendor/yiisoft/yii2/base/InlineAction.php(57): ::call_user_func_array:{/work/php/bproj/vendor/yiisoft/yii2/base/InlineAction.php:57}()
#8 /work/php/bproj/vendor/yiisoft/yii2/base/Controller.php(157): yii\base\InlineAction->runWithParams()
#9 /work/php/bproj/vendor/yiisoft/yii2/base/Module.php(528): frontend\controllers\SearchController->runAction()
#10 /work/php/bproj/vendor/yiisoft/yii2/web/Application.php(103): yii\web\Application->runAction()
#11 /work/php/bproj/vendor/yiisoft/yii2/base/Application.php(386): yii\web\Application->handleRequest()
#12 /work/php/bproj/frontend/web/index-test.php(18): yii\web\Application->run()
#13 {main}