2019-12-15 19:49:23 [::1][-][-][error][yii\base\InvalidConfigException] exception 'yii\base\InvalidConfigException' with message 'yii\web\Request::cookieValidationKey must be configured with a secret key.' in C:\xampp\htdocs\lite\vendor\yiisoft\yii2\web\Request.php:1292 Stack trace: #0 C:\xampp\htdocs\lite\vendor\yiisoft\yii2\web\Request.php(1274): yii\web\Request->loadCookies() #1 C:\xampp\htdocs\lite\vendor\yiisoft\yii2\web\Request.php(1355): yii\web\Request->getCookies() #2 C:\xampp\htdocs\lite\vendor\yiisoft\yii2\web\Request.php(1338): yii\web\Request->loadCsrfToken() #3 C:\xampp\htdocs\lite\vendor\yiisoft\yii2\helpers\BaseHtml.php(302): yii\web\Request->getCsrfToken() #4 C:\xampp\htdocs\lite\views\layouts\main.php(24): yii\helpers\BaseHtml::csrfMetaTags() #5 C:\xampp\htdocs\lite\vendor\yiisoft\yii2\base\View.php(330): require('C:\\xampp\\htdocs...') #6 C:\xampp\htdocs\lite\vendor\yiisoft\yii2\base\View.php(250): yii\base\View->renderPhpFile('C:\\xampp\\htdocs...', Array) #7 C:\xampp\htdocs\lite\vendor\yiisoft\yii2\base\Controller.php(396): yii\base\View->renderFile('C:\\xampp\\htdocs...', Array, Object(app\controllers\SiteController)) #8 C:\xampp\htdocs\lite\vendor\yiisoft\yii2\base\Controller.php(382): yii\base\Controller->renderContent('