unity error

Assets/Scripts/MainMenuManager.cs

@@ -25,6 +25,8 @@ public class MainMenuManager : MonoBehaviour
     public GameObject gameModesScreen;
     public GameObject dummyBuyScreen;
     public GameObject withdrawalScreen;
+    public GameObject settingsScreen;
+
     [Header("Play")]
     public Button btnPlay;
     public Button btnTutorial;
@@ -338,6 +340,7 @@ public class MainMenuManager : MonoBehaviour
         gameModesScreen.SetActive(false);
         dummyBuyScreen.SetActive(false);
         withdrawalScreen.SetActive(false);
+        settingsScreen.SetActive(false);
     }
 
     public void ShowGameModesScreen(){
@@ -346,6 +349,7 @@ public class MainMenuManager : MonoBehaviour
         gameModesScreen.SetActive(true);
         dummyBuyScreen.SetActive(false);
         withdrawalScreen.SetActive(false);
+        settingsScreen.SetActive(false);
     }
 
     public void ShowDummyBuyScreen(){
@@ -354,6 +358,7 @@ public class MainMenuManager : MonoBehaviour
         gameModesScreen.SetActive(false);
         dummyBuyScreen.SetActive(true);
         withdrawalScreen.SetActive(false);
+        settingsScreen.SetActive(false);
     }
 
     public void ShowWithdrawalScreen(){
@@ -362,7 +367,17 @@ public class MainMenuManager : MonoBehaviour
         gameModesScreen.SetActive(false);
         dummyBuyScreen.SetActive(false);
         withdrawalScreen.SetActive(true);
+        settingsScreen.SetActive(false);
         UpdateWithdrawalStatus();
     }
 
+    public void ShowSettingsScreen(){
+        statsPanel.SetActive(false);
+        mainMenuScreen.SetActive(false);
+        gameModesScreen.SetActive(false);
+        dummyBuyScreen.SetActive(false);
+        withdrawalScreen.SetActive(false);
+        settingsScreen.SetActive(true);
+    }
+
 }