Update Rag_conversation.py

Rag_conversation.py

@@ -12,6 +12,11 @@ from langchain.callbacks.streaming_stdout import StreamingStdOutCallbackHandler
 
 # Load environment variables from .env
 load_dotenv()
+OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
+
+if not OPENAI_API_KEY:
+    raise ValueError("OPENAI_API_KEY is not set. Please add it via Hugging Face Secrets.")
+
 
 # Define the persistent directory
 current_dir = os.path.dirname(os.path.abspath(__file__))