fix(api): fixes

knockoutwhistweb/app/model/sessions/UserSession.scala

@@ -47,11 +47,11 @@ class UserSession(val user: User, val host: Boolean, val gameLobby: GameLobby) e
         case "StartGame" =>
           gameLobby.startGame(user)
         case "PlayCard" =>
-          val maybeCardIndex: Option[Int] = (data \ "cardindex").asOpt[Int]
+          val maybeCardIndex: Option[String] = (data \ "cardindex").asOpt[String]
           maybeCardIndex match {
             case Some(index) =>
               val session = gameLobby.getUserSession(user.id)
-              gameLobby.playCard(session, index)
+              gameLobby.playCard(session, index.toInt)
             case None =>
               println("Card Index not found or is not a number.")
           }
@@ -69,7 +69,6 @@ class UserSession(val user: User, val host: Boolean, val gameLobby: GameLobby) e
     lock.unlock()
     if (result.isFailure) {
       val throwable = result.failed.get
-      throwable.printStackTrace()
       throw throwable
     }
   }