fix

Comics/pipelines.py

@@ -81,6 +81,7 @@ class BaseImagesPipeline(ImagesPipeline):
 class ImgDownloadPipeline(BaseImagesPipeline):
     
     def get_media_requests(self, item, info):
+        if item == None: return
         comic = ComicLoader(item=item)
         # 获取需要解析下载的图像
         images_item = comic.parse_images()