Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/dwtechco/public_html/vendor/php-translation/symfony-storage/tests/Unit/XliffConverterTest.php:21 Stack trace: #0 {main} thrown in /home/dwtechco/public_html/vendor/php-translation/symfony-storage/tests/Unit/XliffConverterTest.php on line 21