Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/demoinvfsanz/public_html/vendor/vlucas/phpdotenv/tests/Dotenv/DotenvTest.php:6 Stack trace: #0 {main} thrown in /home/demoinvfsanz/public_html/vendor/vlucas/phpdotenv/tests/Dotenv/DotenvTest.php on line 6