Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/bucereo/my_project_name/vendor/symfony/monolog-bundle/Tests/DependencyInjection/DependencyInjectionTest.php:16 Stack trace: #0 {main} thrown in /home/bucereo/my_project_name/vendor/symfony/monolog-bundle/Tests/DependencyInjection/DependencyInjectionTest.php on line 16