Issue in testing using scalatest - scala

Question

I just set up a new scala project with sbt in IntelliJ, and wrote the following basic class:
Person.scala:
package learning.functional
case class Person(
name: String
)
Main.scala:
package learning.functional
import learning.functional.person
object Main{
val p = Person("John")
}
PersonTest.scala:
import learning.functional.Person
import org.scalatest.FunSuite
class PersonTest extends FunSuite {
test("test person") {
val p = Person("John")
assert(p.name == "John")
}
}
When I try to run sbt test, it throws the following error:
## Exception when compiling 1 sources to /Users/johndooley/Desktop/Scala/scala-learning/target/scala-2.13/test-classes
[error] java.lang.AssertionError: assertion failed:
[error] unexpected value engine in trait FunSuite final <expandedname> private[this]
[error] while compiling: /Users/johndooley/Desktop/Scala/scala-learning/src/test/scala/PersonTest.scala
What could be the reason for this? My build.sbt file:
ThisBuild / scalaVersion := "2.13.10"
libraryDependencies += "org.scalatest" % "scalatest_2.10" % "1.9.1"
lazy val root = (project in file("."))
.settings(
name := "scala-learning"
)
Project structure:
I have tried invalidating cache and restarting, doing clean, update, compile, but nothing works.

Answer 1

I solved this by modifying my dependency to the following:
libraryDependencies += "org.scalatest" %% "scalatest" % "3.2.14"
and completely reloading the sbt shell