JsonUtility.FromJson<> has ArguementExceptions

I used JsonUtility.FromJson<> to read Json file, but it said, "The document root must not follow by other values".

This is my JSON file

  {     
  "file": "11_03",
  "script": "학생회장 투표가 시작되었습니다. 당신은 어느 쪽에 투표할지 고민하고 있다. 투표를 하시겠습니까?",
  "isAbility": false,
  "isChoice": true,
  “ChoiceArr” : [“예”, “아니오”],
  "isSubscript" : true,
  “SubscriptArr” : [“11_03_a”, “11_03_b”],
 “SubscriptProbArr” : [1, 1] 
 }

And this is my JSONParser.cs code.

 using UnityEngine; using System;
 
 [Serializable]
 public class JsonParser : System.Object{

      public string file;
      public string script;
      public Boolean isAbility;
      public string[] AbilityArr;
      public float[] AbilityFigureArr;
      public Boolean isChoice;
      public string[] ChoiceArr;
      public Boolean isSubscript;
      public string[] SubscriptArr;
      public string[] SubscriptProbArr;
 
      public static JsonParser CreateFromJson(string json){
          return JsonUtility.FromJson(json);
      }
 }

I don't have any idea that why it doesn't work. Please help me.