Fatal error: Uncaught Error: Class 'Magento\Catalog\Test\Unit\Ui\DataProvider\Product\Form\Modifier\AbstractModifierTest' not found in /home/esecureh/public_html/magdemo/vendor/magento/module-gift-message/Test/Unit/Ui/DataProvider/Product/Modifier/GiftMessageTest.php:20 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/module-gift-message/Test/Unit/Ui/DataProvider/Product/Modifier/GiftMessageTest.php on line 20