Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/includes/php-ffmpeg/vendor/symfony/filesystem/Tests/LockHandlerTest.php:22 Stack trace: #0 {main} thrown in /var/www/html/includes/php-ffmpeg/vendor/symfony/filesystem/Tests/LockHandlerTest.php on line 22