Displayable Mouse Cursor return key error

[maliefrr]

I tried to follow the documentation https://www.renpy.org/doc/html/mouse.html#MouseDisplayable

image mouse spin:
    "gui/spin0.png"
    rotate 0.0
    linear 1.0 rotate 360.0

    # Pause so image prediction can happen.
    pause 1.0

    repeat

define config.mouse_displayable = MouseDisplayable(
    "gui/arrow.png", 0, 0).add("spin", "mouse spin", 9.9, 9.9)
    
  $ default_mouse = "spin"

but i change it like this

image mc bedroom = "images/BG/bedroom.png"
image cursor pia:
    "gui/button/cursor_1.png"

define config.mouse_displayable = MouseDisplayable(
    "gui/button/cursor.png", 0, 0).add("mouse pia","cursor pia", 0, 0)

label mainpia:
    $ renpy.block_rollback()
    $ quick_menu = True
    $ default_mouse = "mouse pia"
    scene black with dissolve
    show text "Chapter I\nThe Choosen One" with Pause(1.5) 
    scene black with dissolve
    scene mc bedroom with dissolve

but returning this is it the documentation wrong or my code? because i have follow like the documentation said

[renpytom]

2c09515 adds a check to prevent this error, though I don't see the underlying cause here.

[maliefrr]

2c09515 adds a check to prevent this error, though I don't see the underlying cause here.
the thing is i don't know the cause that trigger this error, because i followed the documentation that renpy provide maybe is there any mistake that i missed, maybe the documentation need to give more example to implement this function

[renpytom]

My guess is that this might have been a double-error scenario, where this was hiding the real error.

[maliefrr]

Any idea to check it?

[renpytom]

The change should be in the nightly fix branch, and should show the real error.