Update app.py

app.py

@@ -3,6 +3,7 @@ import pandas as pd
 from dotenv import load_dotenv
 from langchain_community.llms import CTransformers, HuggingFacePipeline, HuggingFaceHub
 from langchain_core.prompts import PromptTemplate
+from langchain.chains import LLMChain
 from transformers import AutoModelForCausalLM, AutoTokenizer, pipeline
 from sentence_transformers import SentenceTransformer, util
 from sklearn.cluster import KMeans