Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/socket.payloader.fctdme.org.ng/vendor/symfony/http-foundation/Tests/AcceptHeaderTest.php:18 Stack trace: #0 {main} thrown in /var/www/socket.payloader.fctdme.org.ng/vendor/symfony/http-foundation/Tests/AcceptHeaderTest.php on line 18