How to create a loading screen between scene using progressbar

Godot Version
Godot 3.6 beta

Question
I want to make a actual loading screen that can actually show how much my scene loaded and when scene finished loading than the scene load not like this

I guess he is just showing a fake loading screen between scenes than load the scene

I want something like this https://youtu.be/5aV_GSAE1kM?si=d_cD3gsH_7L0l4l4
Which can actually show how much my scene is loaded

There are not many tutorial on loading on godot 3 and this tutorial doesn’t work for me my godot editor isn’t detecting global from autoload i don’t know why

There is a demo in asset library but I couldn’t figure it out that how can I implement that in my game because thaone is just weird that just hide the controls not change the scene

So please help me if you can :pleading_face:

Why this error

Is solved :smiley:
obrázok