Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/avtoboy1/demo.avtoboyalar.az/vendor/sebastian/exporter/tests/ExporterTest.php:18 Stack trace: #0 {main} thrown in /home/avtoboy1/demo.avtoboyalar.az/vendor/sebastian/exporter/tests/ExporterTest.php on line 18