how to fix this

[system]

	Attention	Topic was automatically imported from the old Question2Answer platform.
	Asked By	nahom

Parser Error: The function ‘change_scene()’ returns a value, but this value is never used. (warning treated as error)

[system]

	Reply From:	kidscancode

This is not an error, it’s a warning. It means that it’s not necessarily a problem, just something that you should consider. change_scene() has a return value - OK if it works, or something like ERR_CANT_OPEN, if there’s a problem. By ignoring the return value, you may be missing important information.

You can choose how warnings are handled via the settings:

GDScript warning system