Failed to resolve: com.github.davideas:FlexibleAdapter:+

[Juangra13]

Please, I have implemented this library in its version 5.0. 0-rc3 in an app that I had not touched for a long time, now I have to make some modifications, but when I go to synchronize and compile it does not resolve the artifact from where it is hosted, the first question would be where are these artifacts hosted? If they do not exist, where can we get the information on how to implement this library?
I need help, please.