🎈 perf(尝试解决正式环境首次进入白屏问题):

src/components/sideBar/index.tsx

@@ -61,7 +61,7 @@ const SideBar = ({
   const getClassData = async(id) => {
     const res = await fetchData({ id })
     if (res.success) {
-      if (res.data?.list.length > 0) {
+      if (res.data?.list?.length > 0) {
         res.data.list = [{ id: -1, name: '全部' }, ...res.data.list]
       }
       setClassList(() => res.data?.list)
@@ -130,8 +130,8 @@ const SideBar = ({
             )
           })}
         </ScrollView>
-        <View className={styles.sideBar_con} style={{ paddingTop: classList.length > 0 ? '90rpx' : '20rpx' }}>
-          {classList.length > 0 && (
+        <View className={styles.sideBar_con} style={{ paddingTop: classList?.length > 0 ? '90rpx' : '20rpx' }}>
+          {classList?.length > 0 && (
             <View className={styles.product_class} style={{ height: openClass ? '100%' : '' }}>
               <ProductClass list={classList} open={openClass} onOpenClick={val => setOpenClass(val)} onSelect={getSelectClass} defaultSelectId={classId} />
             </View>