fix-2

Assets/Scripts/BackgroundChanger.cs

@@ -4,7 +4,6 @@ using UnityEngine;
 
 public class BackgroundChanger : MonoBehaviour {
 
-
 	private List<GameObject> backgroundGroup = new List<GameObject>();
 	private List<GameObject> obstacleGroup = new List<GameObject>();
 	private GameObject[] gameObjectGroup;
@@ -23,7 +22,6 @@ public class BackgroundChanger : MonoBehaviour {
 		background = GameObject.FindWithTag("Background");
 	}
 
-
 	private void CollectObstacles()
 	{
 		foreach(string color in colors)
@@ -67,7 +65,6 @@ public class BackgroundChanger : MonoBehaviour {
         UpdateObstacle(tagColor);
     }
 
-
 	private void UpdateObstacle(string tagColor)
 	{ 
 		foreach (GameObject obstacle in obstacleGroup)

ProjectSettings/TagManager.asset

@@ -3,16 +3,7 @@
 --- !u!78 &1
 TagManager:
   serializedVersion: 2
-  tags:
-  - BlueObstacle
-  - GreenObstacle
-  - Background
-  - BlueBackground
-  - GreenBackground
-  - WhiteObstacle
-  - YellowObstacle
-  - GreyObstacle
-  - Water
+  tags: []
   layers:
   - Default
   - TransparentFX