es爬蟲 關於elasticsearch_dsl.exceptions.IllegalOperation: Index object cannot have multiple types 報錯

在學習bobby老師的一門《python分佈式爬蟲打造搜索引擎》課的時候需要用python連接es數據庫，結果報錯如下：  elasticsearch_dsl.exceptions.IllegalOperation: Index object cannot have multiple types, doc already set, trying to assign article. 這裏是因爲版本

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