Fatal error: Uncaught Error: Interface 'SebastianBergmann\Diff\LongestCommonSubsequenceCalculator' not found in /home/kingelearn/public_html/vendor/sebastian/diff/src/TimeEfficientLongestCommonSubsequenceCalculator.php:17 Stack trace: #0 {main} thrown in /home/kingelearn/public_html/vendor/sebastian/diff/src/TimeEfficientLongestCommonSubsequenceCalculator.php on line 17