Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/neondra/www/vendor/laravel/framework/tests/Integration/Cache/PhpRedisBackoffTest.php:16 Stack trace: #0 {main} thrown in /home/neondra/www/vendor/laravel/framework/tests/Integration/Cache/PhpRedisBackoffTest.php on line 16