Fatal error: Uncaught Error: Class 'yii\base\Model' not found in /home/mpolsk5/public_html/visibilityfuel.com/vendor/craftcms/cms/src/base/Model.php:24 Stack trace: #0 {main} thrown in /home/mpolsk5/public_html/visibilityfuel.com/vendor/craftcms/cms/src/base/Model.php on line 24