fix: player issues

backend/app/http/posts.go

@@ -165,7 +165,7 @@ func (ctl *posts) Play(ctx fiber.Ctx, id int64, user *model.Users) (*PlayUrl, er
 	}
 
 	for _, asset := range post.Assets.Data {
-		if asset.Type == "video/mp4" && asset.Metas.Short == preview {
+		if asset.Type == "video/mp4" && asset.Metas != nil && asset.Metas.Short == preview {
 			media, err := models.Medias.GetByID(ctx.Context(), asset.Media)
 			if err != nil {
 				return nil, err

frontend/wechat/src/views/ArticleDetail.vue

@@ -50,7 +50,8 @@ const loadVideoSource = async () => {
         }
     } catch (error) {
         console.error('Failed to load video:', error)
-        // alert('视频加载失败，请稍后重试')
+        alert('视频加载失败: ' + error.response.data)
+        await player.value.stop()
     }
 }