Fatal error: Uncaught Error: Class "SebastianBergmann\Diff\LongestCommonSubsequenceTest" not found in /var/www/html/_old/vendor/sebastian/diff/tests/TimeEfficientImplementationTest.php:16 Stack trace: #0 {main} thrown in /var/www/html/_old/vendor/sebastian/diff/tests/TimeEfficientImplementationTest.php on line 16