Fatal error: Uncaught Error: Interface "SebastianBergmann\Diff\LongestCommonSubsequenceCalculator" not found in /home/yrdsb11w3creativ/public_html/yrdsb-board-v1.0.0-alpha/vendor/sebastian/diff/src/MemoryEfficientLongestCommonSubsequenceCalculator.php:20 Stack trace: #0 {main} thrown in /home/yrdsb11w3creativ/public_html/yrdsb-board-v1.0.0-alpha/vendor/sebastian/diff/src/MemoryEfficientLongestCommonSubsequenceCalculator.php on line 20