Fatal error: Uncaught Error: Interface "SebastianBergmann\Diff\LongestCommonSubsequenceCalculator" not found in /Applications/MAMP/htdocs/fislnew/vendor/sebastian/diff/src/MemoryEfficientLongestCommonSubsequenceCalculator.php:20 Stack trace: #0 {main} thrown in /Applications/MAMP/htdocs/fislnew/vendor/sebastian/diff/src/MemoryEfficientLongestCommonSubsequenceCalculator.php on line 20