Fix Langchain Prompts Import

app.py

@@ -4,7 +4,9 @@ import streamlit as st
 # LangChain (local HF pipeline)
 from transformers import AutoTokenizer, AutoModelForSeq2SeqLM, pipeline
 from langchain_huggingface import HuggingFacePipeline
-from langchain.prompts import PromptTemplate
+#from langchain.prompts import PromptTemplate
+from langchain_core.prompts import PromptTemplate
+
 from langchain.schema import StrOutputParser
 
 # LlamaIndex (modular imports)

requirements.txt

@@ -7,6 +7,7 @@ huggingface_hub>=0.23
 langchain>=0.2.8
 langchain-community>=0.2.8
 langchain-huggingface>=0.0.3
+langchain-core
 
 # LlamaIndex (modular packages)
 llama-index>=0.10.35