feat:修复了图片 404 错误

src/views/Concept/index.js

@@ -1,6 +1,7 @@
 import React, { useState, useEffect, useCallback } from 'react';
 import { useSearchParams, useNavigate } from 'react-router-dom';
 import { logger } from '../../utils/logger';
+import defaultEventImage from '../../assets/img/default-event.jpg';
 import {
     Box,
     Container,
@@ -174,7 +175,7 @@ const ConceptCenter = () => {
     const [stockMarketData, setStockMarketData] = useState({});
     const [loadingStockData, setLoadingStockData] = useState(false);
     // 默认图片路径
-    const defaultImage = '/assets/img/default-event.jpg';
+    const defaultImage = defaultEventImage;
 
     // 获取最新交易日期
     const fetchLatestTradeDate = useCallback(async () => {