Fatal error: Uncaught Error: Class 'Magento\Ui\Test\Unit\Component\Form\Element\AbstractElementTest' not found in /home/esecureh/public_html/magdemo/vendor/magento/module-ui/Test/Unit/Component/Form/Element/WysiwygTest.php:19 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/module-ui/Test/Unit/Component/Form/Element/WysiwygTest.php on line 19