可以幫我們看看程式碼中有沒有哪裡錯，因為不是本科系，所以救救商科女大生，謝謝大家!

from flask import Flask, request, abort
from linebot import LineBotApi, WebhookHandler
from linebot.exceptions import InvalidSignatureError
from linebot.models import (
    MessageEvent, 
    TextMessage, 
    TextSendMessage)
import os
import requests
from bs4 import BeautifulSoup
import pandas as pd
from datetime import datetime

# 設定 Line Bot API
LINE_TOKEN = os.getenv('LINE_TOKEN')
LINE_SECRET = os.getenv('LINE_SECRET')

if not LINE_TOKEN or not LINE_SECRET:
    raise ValueError("請設置 LINE_TOKEN 和 LINE_SECRET 環境變數")

api = LineBotApi(LINE_TOKEN)
handler = WebhookHandler(LINE_SECRET)

app = Flask(__name__)

def get_uniqlo_price_history(product_code):
    """爬取 Uniqlo 商品價格歷史"""
    try:
        # Uniqlo 台灣官網的 URL 格式
        url = f"https://www.uniqlo.com/tw/zh_TW/products/{product_code}"
        headers = {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36',
            'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
            'Accept-Language': 'zh-TW,zh;q=0.9,en-US;q=0.8,en;q=0.7',
            'Connection': 'keep-alive'
        }

        response = requests.get(url, headers=headers, timeout=10)
        if response.status_code != 200:
            return None

        soup = BeautifulSoup(response.text, 'html.parser')

        try:
            product_name = soup.select_one('[data-test="product-name"]').text.strip()
            current_price = soup.select_one('[data-test="price-value"]').text.strip()
        except AttributeError:
            return None

        return {
            'name': product_name,
            'current_price': current_price,
            'url': url
        }

    except Exception as e:
        print(f"爬蟲錯誤：{str(e)}")
        return None

# 加入根路由，確認服務器正常運行
@app.route("/", methods=['GET'])
def hello():
    return 'Hello, World!'

# 處理 webhook
@app.route("/webhook", methods=['POST'])
def webhook():
    # 取得 X-Line-Signature 表頭電子簽章內容
    signature = request.headers.get('X-Line-Signature', '')

    # 以文字形式取得請求內容
    body = request.get_data(as_text=True)
    print(f"收到 webhook 請求：{body}")  # 添加日誌

    # 比對電子簽章並處理請求內容
    try:
        handler.handle(body, signature)
    except InvalidSignatureError:
        print("電子簽章錯誤，請檢查密鑰是否正確？")
        abort(400)
    except Exception as e:
        print(f"發生錯誤：{str(e)}")
        abort(500)

    return 'OK'

@handler.add(MessageEvent, message=TextMessage)
def handle_message(event):
    try:
        user_message = event.message.text
        print(f"收到用戶訊息：{user_message}")

        if len(user_message) == 6 and user_message.isdigit():
            # 爬取價格歷史
            price_info = get_uniqlo_price_history(user_message)

            if price_info:
                reply_text = (
                    f"商品名稱：{price_info['name']}\n"
                    f"目前售價：{price_info['current_price']}\n"
                    f"商品連結：{price_info['url']}\n\n"
                    f"💡 提示：建議等待特價活動時購買"
                )
            else:
                reply_text = "抱歉，找不到此商品資訊，請確認商品編號是否正確。"
        else:
            reply_text = "請輸入正確的 Uniqlo 商品貨號（6位數字）\n例如：469773"

        print(f"準備回覆：{reply_text}")

        api.reply_message(
            event.reply_token,
            TextSendMessage(text=reply_text))

        print("回覆訊息成功")

    except Exception as e:
        print(f"處理訊息時發生錯誤：{str(e)}")
        api.reply_message(
            event.reply_token,
            TextSendMessage(text="抱歉，系統發生錯誤，請稍後再試。"))

if __name__ == "__main__":
    print("正在啟動機器人...")
    print(f"LINE_TOKEN 是否存在: {bool(os.getenv('LINE_TOKEN'))}")
    print(f"LINE_SECRET 是否存在: {bool(os.getenv('LINE_SECRET'))}")

    # 測試 LINE Bot API 連接
    try:
        bot_info = api.get_bot_info()
        print(f"機器人名稱: {bot_info.display_name}")
        print("LINE Bot API 連接成功")
    except Exception as e:
        print(f"LINE Bot API 連接失敗: {str(e)}")

    port = int(os.environ.get('PORT', 8080))
    app.run(host='0.0.0.0', port=port)