Can't get Json out of class

Hello everyone!

It seems that I can't get my JSON values out of my class... Here's the script code:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. using System.IO;
6.  
7. public class SaveAndLoad : MonoBehaviour {
8.  
9.     public int InstancesCreated;
10.     public bool Loading = false;
11.     public bool Startup;
12.  
13.     public int LoadingObjID;
14.  
15.     void Start()
16.     {
17.         if (File.Exists(Application.dataPath + "\\Games\\" + PlayerPrefs.GetString("Game") + "\\gamevars.json") == true)
18.         {
19.             JsonUtility.FromJson<GameData>(File.ReadAllText(Application.dataPath + "\\Games\\" + PlayerPrefs.GetString("Game") + "\\gamevars.json"));
20.  
21.             if (GetComponent<GameData>().Startup == false)
22.             {
23.                 LoadGame();
24.             }
25.         }
26.     }
27.  
28.     public void SaveGame()
29.     {
30.         //Variables needed
31.         InstancesCreated = GameObject.Find("ObjectSelectWindow").GetComponent<CreateObjectButton>().InsCreated;
32.  
33.  
34.         //Save Objects
35.  
36.         //Checks if all directories exist and creates them if they don't
37.  
38.         if (Directory.Exists(Application.dataPath + "\\Games") == false)
39.         {
40.             Directory.CreateDirectory(Application.dataPath + "\\Games");
41.         }
42.  
43.         if (Directory.Exists(Application.dataPath + "\\Games\\" + PlayerPrefs.GetString("Game")) == false)
44.         {
45.             Directory.CreateDirectory(Application.dataPath + "\\Games\\" + PlayerPrefs.GetString("Game"));
46.         }
47.  
48.         if (Directory.Exists(Application.dataPath + "\\Games\\" + PlayerPrefs.GetString("Game") + "\\Objects") == false)
49.         {
50.             Directory.CreateDirectory(Application.dataPath + "\\Games\\" + PlayerPrefs.GetString("Game") + "\\Objects");
51.         }
52.  
53.         //Delectes all object files in *\Objects\
54.         var Files = Directory.GetFiles(Application.dataPath + "\\Games\\" + PlayerPrefs.GetString("Game") + "\\Objects");
55.         for (int i = 1; i < Files.Length; i++)
56.         {
57.             File.Delete(Files[i]);
58.         }
59.  
60.         //Saves objects into *\Objects\
61.         for (int i = 1; i < InstancesCreated + 1; i++)
62.         {
63.             GameObject.Find("Object_" + i).GetComponent<ObjectScript>().Save();
64.             File.WriteAllText(Application.dataPath + "\\Games\\" + PlayerPrefs.GetString("Game") + "\\Objects\\" + i + ".json", JsonUtility.ToJson(GameObject.Find("Object_" + i).GetComponent<ObjectScript>()));
65.         }
66.  
67.         //Save Game Variables (Instances Created)
68.         File.WriteAllText(Application.dataPath + "\\Games\\" + PlayerPrefs.GetString("Game") + "\\gamevars.json", JsonUtility.ToJson(gameObject.GetComponent<SaveAndLoad>()));
69.     }
70.  
71.     public void LoadGame()
72.     {
73.         Loading = true;
74.         //Loads GameData
75.         JsonUtility.FromJson<GameData>(File.ReadAllText(Application.dataPath + "\\Games\\" + PlayerPrefs.GetString("Game") + "\\gamevars.json"));
76.         InstancesCreated = gameObject.GetComponent<GameData>().InstancesCreated;
77.         GameObject.Find("ObjectSelectWindow").GetComponent<CreateObjectButton>().InsCreated = InstancesCreated;
78.  
79.         //Loads Objects
80.         GameObject CubePref = GameObject.Find("ObjectSelectWindow").GetComponent<CreateObjectButton>().CubePref;
81.  
82.         Transform SpawnPosEmpty = GameObject.Find("ObjectSelectWindow").GetComponent<CreateObjectButton>().SpawnPosEmpty;
83.  
84.         for (int i = 0; i < InstancesCreated + 1; i++)
85.         {
86.             JsonUtility.FromJson<ObjectData>(File.ReadAllText(Application.dataPath + "\\Games\\" + PlayerPrefs.GetString("Game") + "\\Objects\\" + i + ".json"));
87.             string ObjType = gameObject.GetComponent<ObjectData>().Type;
88.             LoadingObjID = i;
89.  
90.             if (ObjType == "Cube")
91.             {
92.                 Instantiate(CubePref, new Vector3(SpawnPosEmpty.transform.position.x, SpawnPosEmpty.transform.position.y, SpawnPosEmpty.transform.position.z), new Quaternion(0, 0, 0, 1));
93.             }
94.         }
95.  
96.         Loading = false;
97.     }
98.  
99. }
100.  
101. [System.Serializable]
102. public class GameData
103. {
104.  
105.     public int InstancesCreated;
106.     public bool Loading;
107.     public bool Startup;
108.     public int LoadingObjID;
109.  
110. }
111.  
112. [System.Serializable]
113. public class ObjectData
114. {
115.     public float[] Position;
116.     public string Type;
117. }
118.  

The error that I got was " ArgumentException: GetComponent requires that the requested component 'GameData' derives from MonoBehaviour or Component or is an interface. UnityEngine.Component.GetComponent[GameData] () (at C:/buildslave/unity/build/artifacts/generated/common/runtime/ComponentBindings.gen.cs:48) SaveAndLoad.Start () (at Assets/_Scripts/GameMaker/SaveAndLoad.cs:21) "

Thanks!