Fatal error: Uncaught Error: Class 'craft\fields\BaseRelationField' not found in /home/mpolsk5/public_html/seocomo/craft/vendor/craftcms/cms/src/fields/Assets.php:45 Stack trace: #0 {main} thrown in /home/mpolsk5/public_html/seocomo/craft/vendor/craftcms/cms/src/fields/Assets.php on line 45