Why [Object:null]???

Question

cannot connect to button's signals, cause error "Object NULL" - Why?

extends LineEdit

onready var But = $Camera2D/Button

func _ready():
    var m = self.text
    var But = $Camera2D/Button
    print(But) #[Object:null]
    But.connect("button_down", self, "_g")

func _g(text):
    print(self.text)

Answer 1

It's because $Camera2D/Button doesn't exist.

Start typing "$Cam".., and then see what the auto-complete brings up.