I am developing an application in concrete 5.7. I have created a single page under single_pages/dashboard/my_app_name/my_app_single_page.php. When i click on dashboard I see my_app_name, but when i click on my app the tree does not expand to show my_app_single_page,
It just returns a blank page. under Single pages I can see my_app_single_page and I can navigate to it from there, but I can not get there from the dashboard root menu.

Any Idea why this is happening?