python - 不明な理由でゲームが開始する前に Ren'py Uncaught Exception が発生する

Question

Ren'py 6.99.14.3 で楽しくプログラミングしていたところ、ゲームを起動するとエラーが発生しました。スクリプトでゲームが最後に機能したときまでさかのぼってみましたが、まだエラーが発生しています。しばらく調べてみたのですが、まったくわかりませんでした（初心者だったのかもしれません）。

これは「traceback.txt」の最初の部分です (完全なトレースバック部分ではありません)。

I'm sorry, but an uncaught exception occurred.

After initialization, but before game start.
  File "game/screens.rpy", line 714, in prepare_screen
    screen preferences():
  File "game/screens.rpy", line 714, in prepare
    screen preferences():
  File "game/screens.rpy", line 718, in prepare
    use game_menu(_("Preferences"), scroll="viewport"):
  File "game/screens.rpy", line 718, in prepare
    use game_menu(_("Preferences"), scroll="viewport"):
  File "game/screens.rpy", line 720, in prepare
    vbox:
  File "game/screens.rpy", line 720, in prepare
    vbox:
  File "game/screens.rpy", line 722, in prepare
    hbox:
  File "game/screens.rpy", line 722, in prepare
    hbox:
  File "game/screens.rpy", line 725, in prepare
    if renpy.variant("pc"):
  File "game/screens.rpy", line 725, in prepare
    if renpy.variant("pc"):
  File "game/screens.rpy", line 727, in prepare
    vbox:
  File "game/screens.rpy", line 727, in prepare
    vbox:
  File "game/screens.rpy", line 730, in prepare
    textbutton _("Window") action Preference("display", "window")
  File "game/screens.rpy", line 730, in prepare
    textbutton _("Window") action Preference("display", "window")
  File "renpy/common/00preferences.rpy", line 454, in Preference
    rv = get()
  File "renpy/common/00preferences.rpy", line 211, in get
    return __DisplayAction(1.0)
  File "renpy/common/00preferences.rpy", line 27, in __init__
    self.width = int(factor * config.screen_width)
Exception: Character expects its what argument to be a string, got 1280.0.

必要に応じて、より多くの情報を提供します。

ご協力いただきありがとうございます！