Fatal error: Uncaught Error: Class 'React\Promise\TestCase' not found in /home/coelhost/staging.cls.pt/storage-oc3020/vendor/react/promise/tests/FunctionRaceTest.php:5 Stack trace: #0 {main} thrown in /home/coelhost/staging.cls.pt/storage-oc3020/vendor/react/promise/tests/FunctionRaceTest.php on line 5