Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/flexinettek/public_html/vendor/symfony/http-kernel/Tests/CacheWarmer/CacheWarmerAggregateTest.php:17 Stack trace: #0 {main} thrown in /home/flexinettek/public_html/vendor/symfony/http-kernel/Tests/CacheWarmer/CacheWarmerAggregateTest.php on line 17