Fatal error: Uncaught Error: Interface 'SebastianBergmann\Diff\LongestCommonSubsequenceCalculator' not found in D:\xampp\htdocs\psp\backend\vendor\sebastian\diff\src\MemoryEfficientLongestCommonSubsequenceCalculator.php:20 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\sebastian\diff\src\MemoryEfficientLongestCommonSubsequenceCalculator.php on line 20