Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/esecureh/public_html/magdemo/vendor/magento/module-eav/Test/Unit/Model/Entity/Increment/AlphanumTest.php:13 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/module-eav/Test/Unit/Model/Entity/Increment/AlphanumTest.php on line 13