[SOLVED] I learned how to :InvokeServer() and but, I got an error by using it on a gui?

I though you need to use RemoteEvents to send a object from client to server and I found a tutorial to make a script FE and anyways I also can use RemoteFunction, but the problem is:

So I tried using UserInputService and RemoteFunction and it succeed when I kept switching on server to client, and I see both but when I try it on a GUI TextButton, it says that I have to use it on server, and I used it on server and still gave me an error, I don't want to use UserInputService because mobile players can't use the blast. Here is the children of the GUI.

• Attacks
  • LocalScript
  • Blast
    • LocalScript
    • bom (formerly, the RemoteFunction but put it inside of the GUI but later I put it back to ReplicatedStorage.)
    • Cooldown
    • ImageLabel

If you don't get what I mean, I previously pressed E in a Script outside StarterGui and is on ServerInputService and it works for FE now, but when I use it on a Attack Spell GUI, it sends me the error that I have to use it on a server.