jitpack.io failed to resolve github repo

For anyone else that made the simple mistake I made:

Ensure you add the maven { url "https://jitpack.io" } under allprojects instead of buildscript.

Project build.gradle file:

buildscript {
    repositories {
        jcenter()
        // DO NOT ADD IT HERE!!!
    }
    ...
}

allprojects {
    repositories {
        mavenLocal()
        jcenter()
        // ADD IT HERE
        maven { url "https://jitpack.io" }
    }
}

Thanks to Alexander Pacha for pointing that out in a comment above.

After a few attempts and thanks to jitpack support now I can import my library hosted in Github as a Android Gradle dependency.

I will provide a a few very useful links:

How setup your java library

https://jitpack.io/docs/BUILDING/#gradle-projects

How check logs of your dependency in jitpack

https://jitpack.io/com/github/USER/REPO/TAG/build.log

In my case

https://jitpack.io/com/github/rchampa/DropboxHttpConector/1.0.3/build.log