Error:scalac: Scala compiler JARs not found [How to Solve]

Error:scalac: Scala compiler JARs not found (module 'SparkSql'): C:\Users\***\.m2\repository\org\scala-lang\scala-compiler\2.11.8\scala-compiler-2.11.8.jar

The reason for the problem is that Scala libraries are not added to the project.

To add scala libraries Idea File -> Project Structrue -> Libraries can be added.