The Jetifier tool is used as part of the AndroidX migration tool bundled with Android Studio. There is an issue with the tool, however, that is outlined here: https://issuetra
I´m a bite late to the party, but I think there is only one fast option to solve that issue:
Go to Google Archives, Agree save and terms and download Android Studio 3.3 Beta 2 - this is the latest version before the problem occurs. You also have to downgrade your build.gradle to
classpath 'com.android.tools.build:gradle:3.3.0-beta02'
using gradle-4.10.2-all should be no problem.
Perhaps the problem will be fixed with the next beta or canary release, but for now this was the only option that worked out for me.