Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/demohatinco/public_html/fv_lms_pro_backend/vendor/sebastian/diff/tests/LongestCommonSubsequenceTest.php:18 Stack trace: #0 {main} thrown in /home/demohatinco/public_html/fv_lms_pro_backend/vendor/sebastian/diff/tests/LongestCommonSubsequenceTest.php on line 18