Android X: tools:replace specified at line: for attribute, but no new value specified

Question

I have tried many solutions on this website but still, the problem is not solved. The issue is due to Android X library. When I added Android X, this issue was resolved but

Answer 1

migrate to android x

add below lines inside tag

    tools:replace="android:appComponentFactory"
    android:appComponentFactory="android.support.v4.app.CoreComponentFactory"

then also add below lines inside gradle.properties file

  android.useAndroidX=true
  android.enableJetifier=true

Rebuild your project.