初始化不成功，请指导

[donywoo]

(base) woo@Mac-Mini Langchain-Chatchat-master % python init_database.py --recreate-vs
recreating all vector stores
2024-01-31 08:45:01,430 - faiss_cache.py[line:92] - INFO: loading vector store in 'samples/vector_store/bge-large-zh-v1.5' from disk.
2024-01-31 08:45:01,534 - SentenceTransformer.py[line:66] - INFO: Load pretrained SentenceTransformer: BAAI/bge-large-zh-v1.5
2024-01-31 08:46:02,273 - embeddings_api.py[line:39] - ERROR: (MaxRetryError("HTTPSConnectionPool(host='huggingface.co', port=443): Max retries exceeded with url: /api/models/BAAI/bge-large-zh-v1.5 (Caused by ProxyError('Cannot connect to proxy.', RemoteDisconnected('Remote end closed connection without response')))"), '(Request ID: 04968b9f-5b4a-4391-bac8-4131b2790842)')
AttributeError: 'NoneType' object has no attribute 'conjugate'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/Users/woo/CHAT-PDF/Langchain-Chatchat-master/init_database.py", line 107, in
folder2db(kb_names=args.kb_name, mode="recreate_vs", embed_model=args.embed_model)
File "/Users/woo/CHAT-PDF/Langchain-Chatchat-master/server/knowledge_base/migrate.py", line 121, in folder2db
kb.create_kb()
File "/Users/woo/CHAT-PDF/Langchain-Chatchat-master/server/knowledge_base/kb_service/base.py", line 80, in create_kb
self.do_create_kb()
File "/Users/woo/CHAT-PDF/Langchain-Chatchat-master/server/knowledge_base/kb_service/faiss_kb_service.py", line 51, in do_create_kb
self.load_vector_store()
File "/Users/woo/CHAT-PDF/Langchain-Chatchat-master/server/knowledge_base/kb_service/faiss_kb_service.py", line 28, in load_vector_store
return kb_faiss_pool.load_vector_store(kb_name=self.kb_name,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/woo/CHAT-PDF/Langchain-Chatchat-master/server/knowledge_base/kb_cache/faiss_cache.py", line 102, in load_vector_store
vector_store = self.new_vector_store(embed_model=embed_model, embed_device=embed_device)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/woo/CHAT-PDF/Langchain-Chatchat-master/server/knowledge_base/kb_cache/faiss_cache.py", line 60, in new_vector_store
vector_store = FAISS.from_documents([doc], embeddings, normalize_L2=True,distance_strategy="METRIC_INNER_PRODUCT")
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/woo/miniconda3/lib/python3.11/site-packages/langchain_core/vectorstores.py", line 508, in from_documents
return cls.from_texts(texts, embedding, metadatas=metadatas, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/woo/miniconda3/lib/python3.11/site-packages/langchain_community/vectorstores/faiss.py", line 913, in from_texts
embeddings = embedding.embed_documents(texts)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/woo/CHAT-PDF/Langchain-Chatchat-master/server/knowledge_base/kb_service/base.py", line 420, in embed_documents
return normalize(embeddings).tolist()
^^^^^^^^^^^^^^^^^^^^^
File "/Users/woo/CHAT-PDF/Langchain-Chatchat-master/server/knowledge_base/kb_service/base.py", line 37, in normalize
norm = np.linalg.norm(embeddings, axis=1)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<array_function internals>", line 200, in norm
File "/Users/woo/miniconda3/lib/python3.11/site-packages/numpy/linalg/linalg.py", line 2541, in norm
s = (x.conj() * x).real
^^^^^^^^
TypeError: loop of ufunc does not support argument 0 of type NoneType which has no callable conjugate method
请指导

[dosubot]

🤖

嗨，@donywoo！很高兴再次见到你。希望你一切都好。

看起来你在尝试初始化Langchain-Chatchat的数据库时遇到了问题。根据你提供的错误信息，问题似乎出在了embed_documents函数中，这个函数试图对NoneType对象进行操作，这是不允许的。这可能是因为在尝试获取模型BAAI/bge-large-zh-v1.5时出现了问题，导致没有正确地获取到模型。

这个问题可能是由于网络连接问题导致的，因为错误信息中提到了MaxRetryError和ProxyError。你可能需要检查你的网络连接，确保你的设备可以正常访问huggingface.co。如果你在一个需要代理服务器才能访问互联网的网络环境中，你可能需要检查你的代理服务器设置。

另外，你也可以尝试在本地预先下载模型，然后在初始化数据库时指定本地的模型路径，而不是在线获取。你可以在Hugging Face模型库中找到BAAI/bge-large-zh-v1.5模型，然后下载到你的设备上。

如果以上建议都不能解决你的问题，你可能需要提供更多的信息，例如你的操作系统、Python版本、你是否已经安装了所有必要的依赖库等，这样我才能更好地帮助你解决问题。

Sources

• configs/basic_config.py.example
• init_database.py

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[zRzRzRzRzRzRzR]

大概率是模型有问题或者你是cpu的设备但是装了gpu的torch

[wangkx0107]

可以多来几次，我是第一次失败了，但是第二次就ok了

[Leng-bingo]

打开翻墙VPN即可解决，亲测问题