Fatal error: Uncaught Error: Class "SebastianBergmann\Diff\LongestCommonSubsequenceTestCase" not found in /home/trairtil/public_html/vendor/sebastian/diff/tests/TimeEfficientImplementationTest.php:17 Stack trace: #0 {main} thrown in /home/trairtil/public_html/vendor/sebastian/diff/tests/TimeEfficientImplementationTest.php on line 17