Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /mnt/www/law_firm/crm/vendor/symfony/event-dispatcher/Tests/GenericEventTest.php:20 Stack trace: #0 {main} thrown in /mnt/www/law_firm/crm/vendor/symfony/event-dispatcher/Tests/GenericEventTest.php on line 20