Notice: Undefined variable: router in G:\projects\stage.api.edutalk.edu.vn\routes\testInput.php on line 6

Fatal error: Uncaught Error: Call to a member function group() on null in G:\projects\stage.api.edutalk.edu.vn\routes\testInput.php:6 Stack trace: #0 {main} thrown in G:\projects\stage.api.edutalk.edu.vn\routes\testInput.php on line 6