Fatal error: Uncaught Error: Class 'SebastianBergmann\Diff\LCS\LongestCommonSubsequenceTest' not found in /app/vendor/sebastian/diff/tests/LCS/TimeEfficientImplementationTest.php:16 Stack trace: #0 {main} thrown in /app/vendor/sebastian/diff/tests/LCS/TimeEfficientImplementationTest.php on line 16