Sbt-plugin timeout resolution

Question

I am trying to run a simple playscala example, but I have a task launch activator because I have a lot of connection timeouts. I just created an activator application and tried to launch it. No development or custom configuration. I am using the game 2.4.2.

It seems that many of the dependencies that he is trying to solve do not exist: if I try to open the url in the browser, I get only "request path not found". Examples are the following:

https://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/org.webjars/rjs/2.1.15/ivys/ivy.xml

https://repo.typesafe.com/typesafe/ivy-releases/com.typesafe.sbt/sbt-rjs/scala_2.10/sbt_0.13/1.0.7/ivys/ivy.xml

This behavior is time consuming without any value. Is it possible to avoid a nonexistent path or minimize connection timeout?

Thanks Michelle.