Fatal error: Uncaught Error: Class 'React\Tests\Promise\Stream\TestCase' not found in /home/user1111058/www/dev.companysam.by/vendor/react/promise-stream/tests/FirstTest.php:8 Stack trace: #0 {main} thrown in /home/user1111058/www/dev.companysam.by/vendor/react/promise-stream/tests/FirstTest.php on line 8