I bought a project from the marketplace to see system mechanics used in the project.
I test it on my desktop, everything worked perfectly. However, when I tested it on my mobile it gave me this error : DoSub:2: undefined value. It's the first time that I saw this kind of error.
Also, why the game maker banner did not disapear?
Room size: 1024x1024 view_size: 1024x1024
Could anyone help me?