Set texture from file

[hallow ingot]

This code below works when I drag'n'drop file that is already in project folder

func _ready():
    get_viewport().files_dropped.connect(on_files_dropped)

func on_files_dropped(files):
    var texture = load(files[0])
    texture_rect.texture = texture
    print(files)

and this works good setting new texture for TextureRect node. But when I give it file that is outside of project folder (like anywhere in windows filesystem) gd doesn't set anything to TextureRect setting current texture to empty. How can I fix this?

checked this https://godotengine.org/qa/97478/load-a-texture-from-external-path
but still doesn't work
it even cannot load images within project folder now, in remote TextureRect texture sets to some Object ID: but doesn't renders anything on screen