Answers for "Could not resolve all artifacts for configuration ':react-native-document-picker:classpath'."

Could not resolve all artifacts for configuration ':react-native-document-picker:classpath'.

If you don't want to wait until this library will release fixed version, here 
is how you can fix it:

Just add it to your build.gradle under subprojects section in the root (not app/gradle)

subprojects {
    if (project.name.contains('react-native-document-picker')) {
        buildscript {
            repositories {
                jcenter()
                maven { url "https://dl.bintray.com/android/android-tools/"  }
            }
        }
    }
}