Get the following error when I make an AJAX call

Fatal error: Uncaught exception 'Uber_Loader_Exception' with message 'Class or interface SGL_Task_ExecuteAjaxAction not found' in /path/lib/Uber/Loader.php(324) : eval()'d code:3 Stack trace:

0 /path/lib/SGL/FilterChain.php(33) : eval()'d code(8): SGL_Task_ExecuteAjaxAction->__construct()

1 /path/lib/SGL/FilterChain.php(33): eval()

2 /path/lib/SGL/FrontController.php(145): SGL_FilterChain->doFilter(Object(SGL_Registry), Object(SGL_Output))

3 /path/www/index.php(62): SGL_FrontController::run()

4 {main}

thrown in /path/lib/Uber/Loader.php(324) : eval()'d code on line 3

demianturner / sgl-docs-tickets-migration-test

Error in Uber loader #1755

0 /path/lib/SGL/FilterChain.php(33) : eval()'d code(8): SGL_Task_ExecuteAjaxAction->__construct()

1 /path/lib/SGL/FilterChain.php(33): eval()

2 /path/lib/SGL/FrontController.php(145): SGL_FilterChain->doFilter(Object(SGL_Registry), Object(SGL_Output))

3 /path/www/index.php(62): SGL_FrontController::run()

4 {main}