Fatal error: Uncaught Error: Class "Rx\TestCase" not found in /home/innovecobranca/api/notice.innovecobrancas.com.br/vendor/reactivex/rxphp/test/Rx/Observer/CallbackObserverTest.php:10 Stack trace: #0 {main} thrown in /home/innovecobranca/api/notice.innovecobrancas.com.br/vendor/reactivex/rxphp/test/Rx/Observer/CallbackObserverTest.php on line 10