Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DataCollector\DataCollector' not found in /home/phprplacein/public_html/vendor/symfony/http-kernel/Tests/Profiler/MongoDbProfilerStorageTest.php:20 Stack trace: #0 {main} thrown in /home/phprplacein/public_html/vendor/symfony/http-kernel/Tests/Profiler/MongoDbProfilerStorageTest.php on line 20