manifest merger failed androidx

1Inside app > build.gradle :
2dependencies {
3	...
4    // add the following single line for androidx
5    implementation 'androidx.appcompat:appcompat:1.1.0'
6    // implementation before testImplementation
7    testImplementation ......
8}
9
10Inside gradle.properties :
11	android.useAndroidX=true
12	android.enableJetifier=true
13    
14Inside AndroidManifest.xml :
15	<application
16    	....
17        tools:replace="android:appComponentFactory"
18        android:appComponentFactory="whateverString"
19        ....
20    >