list index out of range が解消できない

<lambda>
    Ranki.rl = Ranki.rl.sort(reverse=True, key=lambda x:x[2])
                                                        ~^^^
IndexError: list index out of range 

import tkinter as tk
from tkinter import messagebox
import sys
import time
import threading
from his import His
from ranki import Ranki


QUESTION = ["tkinter", "geometry", "widgets", "messagebox", "configure", 
            "label", "column", "rowspan", "grid", "init"]

class Application(tk.Frame):
    def __init__(self, master):
        super().__init__(master)
        self.pack()

        master.geometry("300x200")
        master.title("タイピングゲーム！")

        # 問題数インデックス
        self.index = 0

        # 正解数カウント用
        self.correct_cnt = 0

        self.create_widgets()

        # 経過時間スレッドの開始
        t = threading.Thread(target=self.timer)
        t.start()

        # Tkインスタンスに対してキーイベント処理を実装
        self.master.bind("<KeyPress>", self.type_event)
    # ウィジェットの生成と配置
    def create_widgets(self):
        self.q_label = tk.Label(self, text="お題：", font=("",20))
        self.q_label.grid(row=0, column=0)
        self.q_label2 = tk.Label(self, text=QUESTION[self.index], width=10, anchor="w", font=("",20))
        self.q_label2.grid(row=0, column=1)
        self.ans_label = tk.Label(self, text="解答：", font=("",20))
        self.ans_label.grid(row=1, column=0)
        self.ans_label2 = tk.Label(self, text="", width=10, anchor="w", font=("",20))
        self.ans_label2.grid(row=1, column=1)
        self.result_label = tk.Label(self, text="", font=("",20))
        self.result_label.grid(row=2, column=0, columnspan=2)

        # # 時間計測用のラベル
        self.time_label = tk.Label(self, text="", font=("",20))
        self.time_label.grid(row=3, column=0, columnspan=2)

        self.flg2 = True

    # キー入力時のイベント処理
    def type_event(self, event):
        # 入力値がEnterの場合は答え合わせ
        if event.keysym == "Return":
            if self.q_label2["text"] == self.ans_label2["text"]:
                self.result_label.configure(text="正解！", fg="red")
                self.correct_cnt += 1
            else:
                self.result_label.configure(text="残念！", fg="blue")

            # 解答欄をクリア
            self.ans_label2.configure(text="")

            # 次の問題を出題
            self.index += 1
            if self.index == len(QUESTION):
                self.flg = False
                self.q_label2.configure(text="終了！")
                messagebox.showinfo("リザルト", f"あなたのスコアは{self.correct_cnt}/{self.index}問正解です。\nクリアタイムは{self.second}秒です。")
                score_his = self.correct_cnt
                time_his = self.second
                # score_rank = self.correct_cnt
                # time_rank  = self.second                  
                numque = len(QUESTION)
                His.set_csv(self,score_his,time_his,numque)
                Ranki.ranki_score(self)
                sys.exit(0)
            self.q_label2.configure(text=QUESTION[self.index])

        elif event.keysym == "BackSpace":
            text = self.ans_label2["text"]
            self.ans_label2["text"] = text[:-1]

        else:
            # 入力値がEnter以外の場合は文字入力としてラベルに追記する
            self.ans_label2["text"] += event.keysym

    def timer(self):
        self.second = 0
        self.flg = True
        while self.flg:
            self.second += 1
            self.time_label.configure(text=f"経過時間：{self.second}秒")
            time.sleep(1)

if __name__ == "__main__":
    root = tk.Tk()
    Application(master=root)
    root.mainloop()

from his import His
from file import File
import csv
import os
import datetime
path = os.getcwd()
rankilist = []
class Ranki(His) :
    rl = rankilist
    def __init__(self,score_rank,time_rank) :
        self.score_rank = score_rank
        self.time_rank = time_rank
        
    def ranki_score(self) :
        # 時間求める
        t_delta = datetime.timedelta(hours=9)
        JST = datetime.timezone(t_delta, 'JST')
        now = datetime.datetime.now(JST)
        nowtime = now.date().strftime('%Y/%m/%d')
        # 二重リスト
        Ranki.rl.append([f'[{nowtime},{self.numque}問中,{int(self.score_his)},問{self.time_his}秒]'])
        print(Ranki.rl)
        # 降順に並び替え
        Ranki.rl = Ranki.rl.sort(reverse=True, key=lambda x:x[2])
       
        with open(path + '\\rank1.csv','w',encoding='utf-8',newline='') as file:
            csv.writer(file).writerows(Ranki.rl)
        return True