Gradle build tool cannot find play-services-tasks.aar? Why?

After doing the following changes the error disappeared:

1. Removed maven { url 'https://maven.google.com' } from repositories in app build.gradle.
2. Added maven { url 'https://maven.google.com' } as first entry in allprojects/repositories in top level build.gradle
3. Changed all play-services and firebase dependencies to the latest versions
4. Changed version of google-services plugin to classpath 'com.google.gms:google-services:4.0.1'

The fix is to put google url above jcenter() in your repository list in gradle.

Here's the issue: https://issuetracker.google.com/issues/80362794

in my case:

allprojects {
    repositories {
        google()
        jcenter()
    }
}

solves my problems

• in my old configuration was only "jcenter()"
• first line jcenter(), second line google() doesn't work

For my case I removed mavenCentral() from app gradle repositores and moved maven { url 'https://maven.google.com' } to the first positionin in project gradle as Ivan Rigamonti suggested above. No Firebase dependecies update needed.

(this should be a comment, but I don't have enough reputation)