Fix Notification issue Firebase Fcm Sound in android

Hi ... I have issue in notification sound while messages are sent from firebase cloud messaging ... iam receiving the notifications perfectly in notification bar ... only iam not getting in android and ios is working fine ... technology used is react native and i have tested with native java app also same issue there ... i have tried passing sound in the payload from server ... it should be easy fix as i might be missing something just pointing out that should be fine ...