Update app.py

app.py

@@ -16,7 +16,11 @@ from langchain_openai import OpenAIEmbeddings
 from langchain_openai import ChatOpenAI
 
 # Load the FAISS index from the .pkl file
-embeddings = OpenAIEmbeddings()
+openai_api_key = os.getenv("OPENAI_API_KEY")
+if not openai_api_key:
+    raise ValueError("OPENAI_API_KEY environment variable is not set.")
+
+embeddings = OpenAIEmbeddings(openai_api_key=openai_api_key)
 db = FAISS.load_local("faiss_index", embeddings,allow_dangerous_deserialization=True)
 
 def get_response_from_query(db, query, k=3):