Fatal error: Uncaught Error: Class "Text_Diff_Renderer" not found in /home/tzuovhm/tzuovhm/apps_/mail/vendor/cerdic/css-tidy/testing/unit-tests/class.Text_Diff_Renderer_parallel.php:7 Stack trace: #0 /home/tzuovhm/tzuovhm/apps_/mail/vendor/cerdic/css-tidy/testing/unit-tests/class.csstidy_csst.php(3): require_once() #1 /home/tzuovhm/tzuovhm/apps_/mail/vendor/cerdic/css-tidy/testing/unit-tests/test.csst.php(3): require_once('/home/tzuovhm/t...') #2 {main} thrown in /home/tzuovhm/tzuovhm/apps_/mail/vendor/cerdic/css-tidy/testing/unit-tests/class.Text_Diff_Renderer_parallel.php on line 7