scala-archetype-simple | a simple maven archetype for project in scala

Hi I wanted to test out the EMR custom step feature.
I created a simple 2 classes Scala application which writes a text file on S3.
Here is the tree

I am trying to create a Scala-Maven project on IntelliJ. I had downloaded the plugin Scala. When I try to create a project from IntelliJ's file menu like below:

Once I click on NEXT and FINISH, I see the Idea tries to build the project and fails with this message:

I am new to scala. And also first time trying to create maven scala project in eclipse (oxygen 3).

First of all, I have eclipse scala plugin installed.

Then, I followed instructions given in this post. As given in the post, I installed eclipse-maven plugin from this repo. Then created new maven project of scala-archetype-simple archetype. This archetype wasnt present there. So I added it by clicking on "Add archetype" button and following wizard.

However after following all steps, I ended up in following errors:

1. Description Resource Path Location Type More than one scala library found in the build path (E:/Program Files/eclipse oxygen 3/eclipse/plugins/org.scala-lang.scala-library_2.12.3.v20170725-052526-VFINAL-6ac6da8.jar, C:/Users/crrma/.m2/repository/org/scala-lang/scala-library/2.10.0/scala-library-2.10.0.jar).At least one has an incompatible version. Please update the project build path so it contains only one compatible scala library. scala Unknown Scala Classpath Problem
2. Description Resource Path Location Type scalatest_2.10-2.0.M6-SNAP8.jar of scala build path is cross-compiled with an incompatible version of Scala (2.10.0). In case this report is mistaken, this check can be disabled in the compiler preference page. scala Unknown Scala Version Problem
3. Description Resource Path Location Type scalaz-concurrent_2.10-7.0.0.jar of scala build path is cross-compiled with an incompatible version of Scala (2.10.0). In case this report is mistaken, this check can be disabled in the compiler preference page. scala Unknown Scala Version Problem
4. Description Resource Path Location Type scalaz-core_2.10-7.0.0.jar of scala build path is cross-compiled with an incompatible version of Scala (2.10.0). In case this report is mistaken, this check can be disabled in the compiler preference page. scala Unknown Scala Version Problem
5. Description Resource Path Location Type scalaz-effect_2.10-7.0.0.jar of scala build path is cross-compiled with an incompatible version of Scala (2.10.0). In case this report is mistaken, this check can be disabled in the compiler preference page. scala Unknown Scala Version Problem
6. Description Resource Path Location Type specs2_2.10-1.13.jar of scala build path is cross-compiled with an incompatible version of Scala (2.10.0). In case this report is mistaken, this check can be disabled in the compiler preference page. scala Unknown Scala Version Problem

Image of eclipse problems (stackoverflow is not allowing me to embed images due to low reputation points)

Image of eclipse Build path window

Whats wrong here?

I try to instantiate an ActorSystem like below