Leaderboard not found

Leader board Authentication shows suceess but report score shows failed and also an error that leaderboard not found, I am using Play game plaugin 0.11.01.

Here is the code:

 void Start()
     {
         //LoginToGooglePlay();
         try
         {
             PlayGamesPlatform.DebugLogEnabled = true;
 
             Social.localUser.Authenticate( (bool success) => {
                 //PlayGamesPlatform.Instance.Authenticate(ProcessAuthentication);
                 if (success)
                 {
                     connectedToGooglePlay = true;
                     Debug.Log("Playconsole connection sucess");
                     Social.ReportScore(PlayerPrefs.GetInt("HighScore"), GPGSIds.leaderboard_highscore, (bool scoreSuccess) =>
                     {
                         if (scoreSuccess)
                         {
                             Debug.Log("Playconsole ScoreReport Success");
                         }
                         else
                         {
                             Debug.Log("Playconsole ScoreReport fail");
                         }
 
 
                     });
 
 
                     // show leaderboard UI
                     PlayGamesPlatform.Instance.ShowLeaderboardUI(GPGSIds.leaderboard_highscore);
                 }
                 else
                 {
                     connectedToGooglePlay = false;
                     Debug.Log("Playconsole connection fail");
                 }
             });
         }
         catch (Exception exception)
         {
             Debug.Log(exception + "Playconsole");
         }
 }