Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /var/www/html/cake3-migration/vendor/sebastian/diff/tests/LCS/LongestCommonSubsequenceTest.php:15
Stack trace:
#0 {main}
  thrown in /var/www/html/cake3-migration/vendor/sebastian/diff/tests/LCS/LongestCommonSubsequenceTest.php on line 15