Godot error

extends Spatial

func _ready():
	var x;
	var y;
	var mouse_sensitivity;

	set_process_input(true);

	# set the mouse sensitivity of the mouse
	var view_sen = 0.2
	Input.set_mouse_mode(2);
func _input(ie):

	#get present rotation of the scene node
	var x = rad2deg(get_node(".").get_rotation().x);
	var y = rad2deg(get_node(".").get_rotation().y);

	#now get the rotation of the mouse, with mouse x and mouse y
	var x = fmod(x - ie.relative_x * 0.2, 360);
	var y = fmod(y - ie.relative_y * 0.2, 90);

	#now just set the values
	get_node(".").set_rotation(Vector3(deg2rad(x), 0, 0));
	get_node(".").set_rotation(Vector3(0, deg2rad(y), 0));

	print ("" , x);
	print ("" , y);