[BUG] PGVECTOR的连接报错问题

[gforcefan]

'PGVector' object has no attribute 'connect'

进行初始化pg数据库时，报出'PGVector' object has no attribute 'connect'
执行python init_database.py --recreate-vs 后，报出'PGVector' object has no attribute 'connect'
如图

环境信息 / Environment Information

• langchain-ChatGLM 版本/commit 号：v0.2.9
• 是否使用 Docker 部署（是/否）：否
• 使用的模型（ChatGLM2-6B / Qwen-7B 等）：ChatGLM3-6B
• 使用的 Embedding 模型（moka-ai/m3e-base 等）:bge-large-zh
• 使用的向量库类型 (faiss / milvus / pg_vector 等)： pg_vector,
• 操作系统及版本 / Operating system and version: ubuntu20.04
• Python 版本 / Python version: 3.10.12
• 其他相关环境信息 / Other relevant environment information: 以github/Langchain-Chatchat/requirements.txt为主，
• langchain版本 0.0.352
• psycopg2版本 2.9.9
• pgvector版本 0.2.4

原因
langchain的版本更新后，PGVector类的connect函数已替换为_create_engine

修改建议
对报错内代码进行修改后

完成初始化及数据导入

[dosubot]

🤖

It's great to see that you've identified the issue and even provided a suggested fix for the problem. Your detailed explanation and proposed changes will be very helpful for the Langchain-Chatchat project.

I encourage you to go ahead and create a pull request with your proposed changes. The maintainers will review it and decide if the changes should be merged into the codebase.

Thank you for your contribution to Langchain-Chatchat!

---

This response is meant to be useful and save you time. It is not meant to be a precise solution, but rather a starting point for your own research.

Help me be more useful! Please leave a 👍 if this is helpful and 👎 if it is irrelevant.

If you want to continue the conversation, start your reply with @dosu-bot.