修复部分bug

src/components/uploadImage/index.tsx

@@ -41,7 +41,7 @@ const PictureItem:FC<ImageParam> = memo(({onChange, defaultList, onlyRead = fals
 
     //预览图片
     const showImage = () => {
-        let list = imageList.map(item => {
+        let list = imageList?.map(item => {
             return formatImgUrl(item, '!w800')
         })
         Taro.previewImage({
@@ -52,7 +52,7 @@ const PictureItem:FC<ImageParam> = memo(({onChange, defaultList, onlyRead = fals
 
     return (
         <View className={styles.image_main}>
-            {imageList.map((item, index) => 
+            {imageList?.map((item, index) => 
                 <View className={styles.ImgItem}>
                     <Image mode="aspectFill" src={formatImgUrl(item)} onClick={showImage}></Image>
                     {!onlyRead && <View onClick={() => delImage(index)} className={classnames(styles.miconfont_close, 'iconfont icon-qingkong')}></View>}