Scala Slick - bi-directional mapping operator cannot be found - postgresql

Question

Using the Slick version 3.1.1 [enter link description here][1]
[1]: http://slick.lightbend.com/download/ I want to create a projection that maps to the case class of mine. However, the problem I keep getting is that the operator for bi-directional mapping cannot be found. Here is a quick look onto the dependencies defined in the .sbt file:
libraryDependencies ++= Seq(
"com.typesafe.slick" %% "slick" % "3.1.1",
"org.slf4j" % "slf4j-nop" % "1.6.4"
)
Whereas the case class and the Table[T] derivation I've defined are as follows:
import slick.driver.PostgresDriver._
import slick.lifted._
case class Log(created_at: String, file: String, line: String, systemName: String, systemVersion: String, networkStatus: Boolean, message: String)
class LogTable(tag: Tag) extends Table[Log](tag, "log") {
def created_at = column[String]("created_at")
def file = column[String]("file")
def line = column[String]("line")
def systemName = column[String]("systemName")
def systemVersion = column[String]("systemVersion")
def networkStatus = column[Boolean]("networkStatus")
def message = column[String]("message")
def * = (created_at, file, line, systemName, systemVersion, networkStatus, message) <> (LogKitIOS.tupled, LogKitIOS.unapply _)
}
Does anyone have an idea onto why I am not able to use the <> operator?