LangChain数据库初始化出错

TypeError: loop of ufunc does not support argument 0 of type NoneType which has no callable conjugate method

报错如下：

1. File "E:\LangChain\Langchain-Chatchat-master\init_database.py", line 107, in <module>
3. folder2db(kb_names=args.kb_name, mode="recreate_vs", embed_model=args.embed_model)
5. File "E:\LangChain\Langchain-Chatchat-master\server\knowledge_base\migrate.py", line 121, in folder2db
7. kb.create_kb()
9. File "E:\LangChain\Langchain-Chatchat-master\server\knowledge_base\kb_service\base.py", line 81, in create_kb
11. self.do_create_kb()
13. File "E:\LangChain\Langchain-Chatchat-master\server\knowledge_base\kb_service\faiss_kb_service.py", line 51, in do_create_kb
15. self.load_vector_store()
17. File "E:\LangChain\Langchain-Chatchat-master\server\knowledge_base\kb_service\faiss_kb_service.py", line 28, in load_vector_store
19. return kb_faiss_pool.load_vector_store(kb_name=self.kb_name,
21. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
23. File "E:\LangChain\Langchain-Chatchat-master\server\knowledge_base\kb_cache\faiss_cache.py", line 102, in load_vector_store
25. vector_store = self.new_vector_store(embed_model=embed_model, embed_device=embed_device)
27. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
29. File "E:\LangChain\Langchain-Chatchat-master\server\knowledge_base\kb_cache\faiss_cache.py", line 60, in new_vector_store
31. vector_store = FAISS.from_documents([doc], embeddings, normalize_L2=True,distance_strategy="METRIC_INNER_PRODUCT")
33. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
35. File "E:\LangChain\Langchain-Chatchat-master\venv\Lib\site-packages\langchain_core\vectorstores.py", line 508, in from_documents
37. return cls.from_texts(texts, embedding, metadatas=metadatas, **kwargs)
39. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
41. File "E:\LangChain\Langchain-Chatchat-master\venv\Lib\site-packages\langchain_community\vectorstores\faiss.py", line 959, in from_texts
43. embeddings = embedding.embed_documents(texts)
45. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
47. File "E:\LangChain\Langchain-Chatchat-master\server\knowledge_base\kb_service\base.py", line 425, in embed_documents
49. return normalize(embeddings).tolist()
51. ^^^^^^^^^^^^^^^^^^^^^
53. File "E:\LangChain\Langchain-Chatchat-master\server\knowledge_base\kb_service\base.py", line 37, in normalize
55. norm = np.linalg.norm(embeddings, axis=1)
57. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
59. File "<__array_function__ internals>", line 200, in norm
61. File "E:\LangChain\Langchain-Chatchat-master\venv\Lib\site-packages\numpy\linalg\linalg.py", line 2541, in norm
63. s = (x.conj() * x).real
65. ^^^^^^^^
67. TypeError: loop of ufunc does not support argument 0 of type NoneType which has no callable conjugate method

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原由于毗连不上https://huggingface.co
解决方法，利用梯子

或者直接访问镜像源下载
BAAI/bge-large-zh-v1.5 at main

下载完后，复制到路径中C:\Users\Administrator\.cache\torch\sentence_transformers\BAAI_bge-large-zh-v1.5


再次运行就正常了

1. python init_database.py --recreate-vs

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