Ive had a problem recently. After i rebuild cache it jump to a page where it says, "ERROR The requested page could not be found". No Server Error log and all file are fine with health check. I disable all the plugins. Then in admin debug mode the error comes a little clearer says Jump to error page but also displays. "Route admin.php/ could not be found." So i search this error but cant find much about this. Anyone had the same problem. im still at xenforo 1.3.3 and i dont wanna update if this error breaks something.