Upload app.py

app.py

@@ -69,7 +69,8 @@ def get_vectorstore(backend_name: str):
             from langchain_community.vectorstores import Qdrant
             vs = Qdrant(path=QDRANT_PATH, collection_name=QDRANT_COLLECTION, embeddings=embeddings)
         else:
-            return None
+            from langchain_community.vectorstores import FAISS
+            vs = FAISS.load_local(FAISS_PATH, embeddings, allow_dangerous_deserialization=True)
             
         vectorstores[backend_name] = vs
         return vs