Notice: Undefined variable: router in G:\projects\beta.api.edutalk.edu.vn\routes\sms.php on line 4

Fatal error: Uncaught Error: Call to a member function post() on null in G:\projects\beta.api.edutalk.edu.vn\routes\sms.php:4 Stack trace: #0 {main} thrown in G:\projects\beta.api.edutalk.edu.vn\routes\sms.php on line 4