Fatal error: Uncaught Error: Class "yii\base\Security" not found in /home/telefonai/public_html/test.telefonai.eu/vendor/craftcms/cms/src/services/Security.php:25 Stack trace: #0 {main} thrown in /home/telefonai/public_html/test.telefonai.eu/vendor/craftcms/cms/src/services/Security.php on line 25