Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/jasainfo/public_html/dev/tests/static/testsuite/Magento/Test/Tools/Composer/RootComposerMappingTest.php:13 Stack trace: #0 {main} thrown in /home/jasainfo/public_html/dev/tests/static/testsuite/Magento/Test/Tools/Composer/RootComposerMappingTest.php on line 13