Specific error

Hello guys, i need your help again. I've found this package, which allows to implement a simple leaderboard. The thing is that i'm getting errors(see attachments), the whole code seems right, i simply don't get what's wrong with it. Any help is invaluable.

 using UnityEngine;
 using System.Collections;
 
 public class dreamloLeaderBoard : MonoBehaviour {
     
     string dreamloWebserviceURL = "http://dreamlo.com/lb/";
     
     public string privateCode = "";
     public string publicCode = "";
     
     string highScores;
 
     
     public struct Score {
         public string playerName;
         public int score;
         public int seconds;
         public string shortText;
     }
     
     public static dreamloLeaderBoard GetSceneDreamloLeaderboard()
     {
         GameObject go = GameObject.Find("dreamloLeaderboard");
         
         if (go == null) return null;
         
         return go.GetComponent<dreamloLeaderBoard>();
     }
     
     public void AddScore(string playerName, int totalScore)
     {
         StartCoroutine(AddScoreWithPipe(playerName, totalScore));
     }
     
     public void AddScore(string playerName, int totalScore, int totalSeconds)
     {
         StartCoroutine(AddScoreWithPipe(playerName, totalScore, totalSeconds));
     }
     
     public void AddScore(string playerName, int totalScore, int totalSeconds, string shortText)
     {
         StartCoroutine(AddScoreWithPipe(playerName, totalScore, totalSeconds, shortText));
     }
     
     // This function saves a trip to the server. Adds the score and retrieves results in one trip.
     IEnumerator AddScoreWithPipe(string playerName, int totalScore)
     {
         playerName = Clean(playerName);
         
         WWW www = new WWW(dreamloWebserviceURL + privateCode + "/add-pipe/" + WWW.EscapeURL(playerName) + "/" + totalScore.ToString());
         yield return www;
         highScores = www.text;
     }
     
     IEnumerator AddScoreWithPipe(string playerName, int totalScore, int totalSeconds)
     {
         playerName = Clean(playerName);
         
         WWW www = new WWW(dreamloWebserviceURL + privateCode + "/add-pipe/" + WWW.EscapeURL(playerName) + "/" + totalScore.ToString()+ "/" + totalSeconds.ToString());
         yield return www;
         highScores = www.text;
     }
     
     IEnumerator AddScoreWithPipe(string playerName, int totalScore, int totalSeconds, string shortText)
     {
         playerName = Clean(playerName);
         shortText = Clean(shortText);
         
         WWW www = new WWW(dreamloWebserviceURL + privateCode + "/add-pipe/" + WWW.EscapeURL(playerName) + "/" + totalScore.ToString() + "/" + totalSeconds.ToString()+ "/" + shortText);
         yield return www;
         highScores = www.text;
     }
     
     IEnumerator GetScores()
     {
         highScores = "";
         WWW www = new WWW(dreamloWebserviceURL +  publicCode  + "/pipe");
         yield return www;
         highScores = www.text;
     }
     
     public void LoadScores()
     {
         StartCoroutine(GetScores());
     }
 
     
     public string[] ToStringArray()
     {
         if (this.highScores == "") return null;
         
         string[] rows = this.highScores.Split(new char[] {'\n'}, System.StringSplitOptions.RemoveEmptyEntries);
         return rows;
     }
     
     public Score[] ToScoreArray()
     {
         string[] rows = ToStringArray();
         if (rows == null) return null;
         
         int rowcount = rows.Length;
         
         if (rowcount <= 0) return null;
         
         Score[] scoreList = new Score[rowcount];
         
         for (int i = 0; i < rowcount; i++)
         {
             string[] values = rows[i].Split(new char[] {'|'}, System.StringSplitOptions.RemoveEmptyEntries);
             
             Score current = new Score();
             current.playerName = values[0];
             current.score = 0;
             current.seconds = 0;
             current.shortText = "";
 
             if (values.Length > 1) current.score = CheckInt(values[1]);
             if (values.Length > 2) current.seconds = CheckInt(values[2]);
             if (values.Length > 3) current.shortText = values[3];
             
             scoreList[i] = current;
         }
         
         return scoreList;
     }
     
     
     
     // Keep pipe and slash out of names
     
     string Clean(string s)
     {
         s = s.Replace("/", "");
         s = s.Replace("|", "");
         return s;
         
     }
     
     int CheckInt(string s)
     {
         int x = 0;
         
         int.TryParse(s, out x);
         
         return x;
     }
     
 }

[2]: /storage/temp/24984-screenshot.jpg