Fatal error: Uncaught Error: Interface "SebastianBergmann\Diff\LongestCommonSubsequenceCalculator" not found in /home/wwwarms/ws.arms-tools.com/websocket-server/vendor/sebastian/diff/src/MemoryEfficientLongestCommonSubsequenceCalculator.php:20 Stack trace: #0 {main} thrown in /home/wwwarms/ws.arms-tools.com/websocket-server/vendor/sebastian/diff/src/MemoryEfficientLongestCommonSubsequenceCalculator.php on line 20