Flask 有时会正常工作，有时会导致“builtins.IndexError”错误？

Question

如果我运行这段代码，它会被正确分页，没有任何错误builtins.IndexError IndexError: single positional indexer out of bounds “错误，我完全理解 intenettene 解析，你有帮助吗？当我看相关文章时，我没有了解其中一些的解决方案，但有些不明白，因为他们不是土耳其语，你能帮我吗？

from flask import Flask,render_template,flash,redirect,url_for,session,logging,request

from flask_mysqldb import MySQL

from wtforms import Form,StringField,TextAreaField,PasswordField,validators

from passlib.hash import sha256_crypt

from functools import wraps

import pandas as pd

import random

import time

import sys

app = Flask(__name__)

app.secret_key= "ybblog"

app.config["MYSQL_HOST"] = "localhost"

app.config["MYSQL_USER"] = "root"

app.config["MYSQL_PASSWORD"] = ""

app.config["MYSQL_DB"] = "ybblog"

app.config["MYSQL_CURSORCLASS"] = "DictCursor"

mysql = MySQL(app)

@app.route("/")

def index():   

    return render_template("site.html")

@app.route("/maps")

def about():

    return render_template("maps.html")

#Atama Url

@app.route("/sonuc",methods=["GET","POST"])

def sonuc():

    cursor = mysql.connection.cursor()

    sorgu = "Select * From site"

    result = cursor.execute(sorgu)    

    if result >0:

        articles = cursor.fetchall()

        cursor.execute("DELETE FROM site")

        mysql.connection.commit()

        cursor.close()

        return render_template("sonuc.html",articles= articles)

    else:

        cursor.execute("DELETE FROM site")

        mysql.connection.commit()

        cursor.close()

        return render_template("site.html")

    cursor.execute("DELETE FROM site")

    mysql.connection.commit()

    cursor.close()