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### 功能描述以及必要性描述  日常开发中有些字段是希望直接序列化成 json 格式的, 目前选择json只有图片、文件等格式, 期望可以增加一个纯 json 的选项 ### 建议和方案 _No response_
这种报错会是什么原因呢... 2022-03-23 06:21:06 [scrapy.core.scraper] ERROR: Error downloading Traceback (most recent call last): File "/usr/local/lib/python3.8/dist-packages/twisted/internet/defer.py", line 1656, in _inlineCallbacks result = current_context.run( File "/usr/local/lib/python3.8/dist-packages/twisted/python/failure.py", line 489, in throwExceptionIntoGenerator return g.throw(self.type, self.value,...