Not working with "Yii::getLogger()->autoFlush = 1;"

[s-o-f]

Index.php contains: $yii = Yii::createWebApplication($config); Yii::getLogger()->autoFlush = 1; $yii->run();

Fatal error: Call to a member function run() on a non-object in \protected\extensions\yii-debug-toolbar2\views\main.php on line 36