...Unexpected Identifier?

[PKNessTorio]

When I tried running it, it didn't work. Apparently, there's a parse error that fails to load a few scripts. Also, it showed that onready var GameNode = get_node(@"/root/Game") was an unexpected identifier. Please help with this.

[basiccube]

You are trying to open it in Godot 4, while the readme mentions that it is made with Godot 3.
Besides, I'd advise not using Godot Tower at all as it is very buggy.