Phone plays general notification sounds during phone calls after Oreo update

[Android Central Question]

Hello,
I have a moto G5S. I currently have Android 8.1. I'm sorry I don't recall exactly what I had before the update, but it was Nougat.
Since upgrading my phone does this annoying there where I'm on the phone talking to somebody and I hear "ding ding" notifications for things like gmail or facebook. It didn't do that before Oreo.

Anybody know how I can make the "sound notifications during phone calls" stop?

Thanks so much!