An old version of scalatest is still used in this project. Upgrade it to the latest version 3.2.14. Some breaking changes need to be resolved most notably, org.scalatest.FlatSpec should be replaced by org.scalatest.flatspec.AnyFlatSpec, and org.scalatest.Matchers with org.scalatest.matchers.should.Matchers
Background
An old version of scalatest is still used in this project. Upgrade it to the latest version 3.2.14. Some breaking changes need to be resolved most notably,
org.scalatest.FlatSpecshould be replaced byorg.scalatest.flatspec.AnyFlatSpec, andorg.scalatest.Matcherswithorg.scalatest.matchers.should.Matchershttps://www.scalatest.org/ https://www.scalatest.org/at_a_glance/FlatSpec
Feature
Use scalatest 3.2.14