Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/ramassof/backup.ramas.dev/vendor/symfony/serializer/Tests/Encoder/JsonEncoderTest.php:20 Stack trace: #0 {main} thrown in /home/ramassof/backup.ramas.dev/vendor/symfony/serializer/Tests/Encoder/JsonEncoderTest.php on line 20