updated langchain

ai_core.py

@@ -14,14 +14,14 @@ import logging
 from typing import List
 
 from langchain_community.document_loaders import TextLoader
-from langchain.text_splitter import RecursiveCharacterTextSplitter
+from langchain_text_splitters import RecursiveCharacterTextSplitter
 from langchain_community.embeddings import SentenceTransformerEmbeddings
 from langchain_community.vectorstores import Chroma
 from langchain_google_genai import GoogleGenerativeAI
 from langchain.chains import create_retrieval_chain
 from langchain.chains.combine_documents import create_stuff_documents_chain
 from langchain_core.prompts import ChatPromptTemplate
-from langchain.docstore.document import Document
+from langchain_core.documents import Document
 from langchain_core.messages import AIMessage, HumanMessage
 
 from shared import analysis_jobs, update_session, get_session

requirements.txt

@@ -8,6 +8,7 @@ langchain
 langchain-core
 langchain-community
 langchain-google-genai
+langchain-text-splitters
 
 # Vector Store & Embeddings
 chromadb