Changed Spawnerscripting to prevent nullreferences on objects after quitting the game.

Assets/_Game/Scribble Fall/Scripts/PlattformGenerating.cs

-using System;
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
+using UnityEngine;
 
 public class PlattformGenerating : MonoBehaviour
 {
-	public GameObject spawner;
+	private SpawnerScript spawner;
+
 	private void OnBecameInvisible()
 	{
-		spawner.GetComponent<SpawnerScript>().generateplattform();
-		//Destroy(gameObject);
-
+		if (spawner != null) spawner.generateplattform();
 	}
 
 	private void Start()
 	{
-		spawner = GameObject.FindWithTag("Scribblespawner");
+		spawner = FindObjectOfType<SpawnerScript>();
 	}
 }

Assets/_Game/Scribble Fall/Scripts/SpawnerScript.cs

-using System.Collections;
+using System;
+using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
+using Random = UnityEngine.Random;
 
 public class SpawnerScript : MonoBehaviour
 {
@@ -19,7 +21,10 @@ public class SpawnerScript : MonoBehaviour
 	public void generateplattform()
 	{
 		amountofplattforms--;
+	}
 
+	private void Update()
+	{
 		for(int i = 0; amountofplattforms < maximumamountofplattforms; i++)
 		{
 			int rand = Random.Range(1, 13);
@@ -71,8 +76,6 @@ public class SpawnerScript : MonoBehaviour
 		}
 	}
 
-
-
 	public void generator(GameObject scribbleobject, int rand)
 	{
 		int plattformoffset = Random.Range(-6, 6);