I can send Hello world template but other tmeplates could not be sent via the same code. I have seen may be i am missing something the app mode is live and all no error on the dashboard.

{"code":400,"Message":"{\"error\":{\"message\":\"(#135000) Generic user error\",\"type\":\"OAuthException\",\"code\":135000,\"error_data\":{\"messaging_product\":\"whatsapp\",\"details\":\"Generic user error\"},\"fbtrace_id\":\"A2fYfO1Xs2W1Bc586NDzNcT\"}}"}