Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /mnt/disk1/hosted/cuadro_mando/vendor/sebastian/diff/tests/ChunkTest.php:18 Stack trace: #0 {main} thrown in /mnt/disk1/hosted/cuadro_mando/vendor/sebastian/diff/tests/ChunkTest.php on line 18