Fatal error: Uncaught Error: Class 'SebastianBergmann\Diff\LongestCommonSubsequenceTest' not found in /home/app3/public_html/service/app/Http/Controllers/html2text/vendor/sebastian/diff/tests/MemoryEfficientImplementationTest.php:16 Stack trace: #0 {main} thrown in /home/app3/public_html/service/app/Http/Controllers/html2text/vendor/sebastian/diff/tests/MemoryEfficientImplementationTest.php on line 16