So I'm trying to have the menu() function to display the menu and call the menusel() function.

For some reason, when I add line 234 (next to red circle), it gives me an error and doesn't run and also doesn't say what the error is. I have menu() function in the main() function.

The moment I remove line 234 and call the menusel() function from somewhere else, it works. But I need menusel() function to be called every time the menu() function runs.

I don't understand how to fix this or what even the problem is. I tried moving menu() function before all other functions too.