[Bug]: 构建知识库时卡住不反应

### Installation Method | 安装方法与平台

Pip Install (I used latest requirements.txt)

### Version | 版本

Latest | 最新版

### OS | 操作系统

Windows

### Describe the bug | 简述

构建知识库时卡住不反应，页面停留在“构建知识库”，终端停留在“Checking Text2vec ...”

### Screen Shot | 有帮助的截图


### Terminal Traceback & Material to Help Reproduce Bugs | 终端traceback（如有） + 帮助我们复现的测试材料样本（如有）

D:\Program Files\anaconda\anaconda3\envs\python310\lib\site-packages\langchain\vectorstores\__init__.py:35: LangChainDeprecationWarning: Importing vector stores from langchain is deprecated. Importing from langchain will no longer be supported as of langchain==0.2.0. Please import from langchain-community instead:

`from langchain_community.vectorstores import FAISS`.

To install langchain-community run `pip install -U langchain-community`.
warnings.warn(
D:\Program Files\anaconda\anaconda3\envs\python310\lib\site-packages\langchain\document_loaders\__init__.py:36: LangChainDeprecationWarning: Importing document loaders from langchain is deprecated. Importing from langchain will no longer be supported as of langchain==0.2.0. Please import from langchain-community instead:

`from langchain_community.document_loaders import UnstructuredFileLoader`.

To install langchain-community run `pip install -U langchain-community`.
warnings.warn(
Checking Text2vec ...
Establishing knowledge archive ...
Checking Text2vec ...

Start by reproducing the knowledge-base build on Windows with the latest requirements.txt and observe the terminal around “Checking Text2vec ...” and “Establishing knowledge archive ...”. Trace the knowledge-base entry point and Text2vec check to identify why the page and process stop responding; done means the build completes or reports a clear error.

Written by the indexing model from the issue text.