How to hide gameobjects without breaking your code

I am making a game where you are on the computer and you can open up applications and websites and such, and i needed a basic code to hide and i used the SetActive, it worked when i needed it but when i was testing things out it completely stopped one of my codes from running.

 public GameObject InterwebUI;
     public GameObject DesktopWeb;
     public void OpenWeb()
     {
         InterwebUI.SetActive(true);
         DesktopWeb.SetActive(false);
     }
     public void CloseWeb()
     {
         InterwebUI.SetActive(false);
         DesktopWeb.SetActive(true);
     }

This is my open and close script using the UI and Button component, and the code thats stopping it is running off a Start Function cause I dont know how else to start it.