All firebase libraries must be either above or below 14.0.0

Question

I have checked my app build.gradle file and these are the only lines that are related to firebase in them

/***
 * Firebase
 */
implementation \'com.google.f         


        

Answer 1

Turns out I forgot to change the version number for com.google.android.gms:play-services-ads, switched it to 15.0.0 and it worked.

Here's a blog by Google that provides more information. Announcing new SDK versioning in Google Play services and Firebase