Error: [1011] when creating key down handler

[JoMaZu787]

I'm trying to add a key down handler with dpg.add_key_down_handler(key=27, callback=...) but its giving me the following message:

Exception: 
Error:     [1011]
Command:   add_*
Item:      23 
Label:     
Item Type: mvAppItemType::mvKeyDownHandler
Message:   Parent could not be deduced.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "##############################.py", line 35, in <module>
    main()
  File "##############################.py", line 25, in main
    dpg.add_key_down_handler(key=27, callback=escape)
  File "D:\Python3\Lib\site-packages\dearpygui\dearpygui.py", line 5299, in add_key_down_handler
    return internal_dpg.add_key_down_handler(key, label=label, user_data=user_data, use_internal_label=use_internal_label, tag=tag, callback=callback, show=show, parent=parent, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
SystemError: <built-in function add_key_down_handler> returned a result with an exception set

(File paths redacted for obvious reasons)
Here is my code:

import dearpygui.dearpygui as dpg


def escape(sender, app_data):
    print(sender)
    print(app_data)


def mainloop():
    pass


def main():
    dpg.create_context()

    with dpg.window(tag="Primary Window"):
        dpg.add_text("Hello, world")

    dpg.create_viewport(title='Window Title')
    dpg.set_viewport_decorated(False)
    dpg.setup_dearpygui()
    dpg.show_viewport()
    dpg.set_primary_window("Primary Window", True)
    dpg.toggle_viewport_fullscreen()
    dpg.add_key_down_handler(key=27, callback=escape)

    while dpg.is_dearpygui_running():
        mainloop()
        dpg.render_dearpygui_frame()

    dpg.destroy_context()


if __name__ == '__main__':
    main()

[JoMaZu787]

I asked ChatGPT and it was not able to help me