yii\web\Request::cookieValidationKey must be configured with a secret key.
#0 /srv/miltor/vendor/yiisoft/yii2/web/Request.php(1705): yii\web\Request->loadCookies()
#1 /srv/miltor/vendor/yiisoft/yii2/web/User.php(593): yii\web\Request->getCookies()
#2 /srv/miltor/vendor/yiisoft/yii2/web/User.php(321): yii\web\User->getIdentityAndDurationFromCookie()
#3 /srv/miltor/vendor/yiisoft/yii2/web/User.php(727): yii\web\User->loginByCookie()
#4 /srv/miltor/vendor/yiisoft/yii2/web/User.php(199): yii\web\User->renewAuthStatus()
#5 /srv/miltor/vendor/yiisoft/yii2/web/User.php(367): yii\web\User->getIdentity()
#6 /srv/miltor/vendor/yiisoft/yii2/base/Component.php(139): yii\web\User->getIsGuest()
#7 /srv/miltor/common/modules/realty/core/bootstraps/RealtyBootstrap.php(23): yii\base\Component->__get()
#8 /srv/miltor/vendor/yiisoft/yii2/base/Application.php(325): realty\core\bootstraps\RealtyBootstrap->bootstrap()
#9 /srv/miltor/vendor/yiisoft/yii2/web/Application.php(69): yii\base\Application->bootstrap()
#10 /srv/miltor/vendor/yiisoft/yii2/base/Application.php(271): yii\web\Application->bootstrap()
#11 /srv/miltor/vendor/yiisoft/yii2/base/BaseObject.php(109): yii\base\Application->init()
#12 /srv/miltor/vendor/yiisoft/yii2/base/Application.php(204): yii\base\BaseObject->__construct()
#13 /srv/miltor/frontend/web/index.php(24): yii\base\Application->__construct()
#14 {main}