Fatal error: Uncaught Error: Class "Magento\Config\Block\System\Config\Form\Field\FieldArray\AbstractFieldArray" not found in /home/www/staging1.gamanorteweb.com/app/code/Sm/AttributesSearch/Block/Adminhtml/Form/Field/SelectAttributes.php:20 Stack trace: #0 {main} thrown in /home/www/staging1.gamanorteweb.com/app/code/Sm/AttributesSearch/Block/Adminhtml/Form/Field/SelectAttributes.php on line 20