Update tools.py

tools.py

@@ -4,7 +4,7 @@ from langchain.chat_models import ChatOpenAI
 from langchain.document_loaders import PyPDFLoader
 from langchain.text_splitter import CharacterTextSplitter
 from langchain.vectorstores import FAISS
-from langchain.embeddings import SentenceTransformerEmbeddings
+from langchain.embeddings import HuggingFaceEmbeddings
 import serpapi
 
 load_dotenv()
@@ -17,7 +17,7 @@ llm = ChatOpenAI(
 )
 
 # Embeddings (HuggingFace)
-embeddings = SentenceTransformerEmbeddings(model_name="autoformer")
+embeddings = HuggingFaceEmbeddings(model_name="all-MiniLM-L6-v2")
 
 # Load PDFs and create FAISS vectorstore
 def load_vectorstore(pdf_dir="pdfs/"):