Some sound not working, Nexus 5X

[AC Question]

Recently my Nexus 5X was dropped in a bowl of porridge and yoghurt (I know, weird.) And after turning it off, cleaning it out and back on again everything seemed fine. But then, I tried to open a game, and there was no sound. I then tried playing a ringtone, and it played fine. Please help as I cannot hear people when they call me either. Although I can hear in speaker mode.