Firebase Token issue

[Zaigham Raza]

I have intergrated firebase FCM in my Android application and when i run it from Pakistan it is getting firebase token successfully and when my customer run it from netherlands it gives error of firebase token failed. Can anybody help in this? Here is my code snippet for getting token

FirebaseMessaging.getInstance().token.addOnCompleteListener { task ->
if (!task.isSuccessful) {
Toast.makeText(this, "FirebaseToken Failed", Toast.LENGTH_SHORT).show()
return@addOnCompleteListener
}
Log.e("Zaigham","FireBase Hit successfull = ${task.result.toString()}")
AppSharedPreferences.deviceFBToken = task.result.toString()
}