Fatal error: Uncaught Error: Class 'yii\base\Event' not found in /home/mpolsk5/public_html/visibilityfuel.com/vendor/craftcms/cms/src/events/FieldEvent.php:19
Stack trace:
#0 {main}
thrown in /home/mpolsk5/public_html/visibilityfuel.com/vendor/craftcms/cms/src/events/FieldEvent.php on line 19